I wouldn't mind throwing something together for you, but as your first controller I wouldn't normally recommend that combination. Fire/Radiation maybe?
If you're set on Fire/Empathy realize it is a very busy combo. This is a very teaming-oriented combo that will be able to provide support, but it would be very difficult to solo unless you build for it specifically.
Will you be teaming exclusively? What role are you trying to fill for your team? All of this will help the forumites here to offer advice 
I do a little of both. I log in and put my team flag up then solo until I get an invite usually. I'd like something well rounded. If Fire/Rad is a better combo for that, then I'll take a build with that in mind.
I don't have to be the best at either playstye just functional in both.
Thanks!
Fire/Radiation and Fire/Empathy are both appreciated by teams. However, Fire/Radiation is the more versatile character, and Fire/Radiation is also the one that will probably be desired more for big task forces and the like, especially if there are Archvillains or Giant Monsters involved.
I'm not trying to discourage you from Fire/Empathy. I have one at level 50 and she is one of my faves. However, my level 50 Fire/Rad is much more versatile in terms of solo, team, utility powers, etc.
Either way you go, you dont absolutely have to follow a build. Just jump in and try all the powers. Later you can respec out of the ones you dont like.
Lewis
Random AT Generation!
"I remember... the Alamo." -- Pee-wee Herman
"Oh don't worry. I always leave things to the last moment." -- The Doctor
"Telescopes are time machines." -- Carl Sagan
This is a quick Fire/Rad build that would let you try most of the good powers out. It is by no means perfect, or even the build I run, but like you said you can tweak it and respec into the powers you end up liking when you play
I will try to thow together a Fire/Emp one too if you like.
Archetype: Controller
Primary: Fire Control
Secondary: Radiation Emission
+---------------------------------------------
01 => Radiant Aura ==> Heal(1),Heal(5)
01 => Char ==> Acc(1),Acc(3),Rech(9),Hold(19),Hold(46)
02 => Ring of Fire ==> Acc(2),Acc(3),Dam(9),Dam(40),Dam(46)
04 => Radiation Infection ==> EndCost(4),EndCost(5),ToHitDeBuff(11),ToHitDeBuff( 11),DefDeBuff(46)
06 => Accelerate Metabolism ==> Rech(6),Rech(7),Rech(7),EndMod(50)
08 => Combat Jumping ==> DefBuff(8)
10 => Hurdle ==> Jump(10)
12 => Flashfire ==> Acc(12),Acc(13),Rech(13),Rech(15),DisDur(15),DisDu r(19)
14 => Super Jump ==> Jump(14)
16 => Fire Cages ==> Acc(16),Acc(17),EndCost(17),Immob(43),Immob(43)
18 => Health ==> Heal(18)
20 => Stamina ==> EndMod(20),EndMod(21),EndMod(21)
22 => Hot Feet ==> EndCost(22),EndCost(23),Acc(23),Acc(25),Dam(36),Da m(37)
24 => Enervating Field ==> EndCost(24),EndCost(25)
26 => Lingering Radiation ==> Acc(26),Acc(27),Rech(27),Rech(36),Rech(37)
28 => Choking Cloud ==> EndCost(28),EndCost(29),EndCost(29),Hold(31),Hold( 34),Hold(36)
30 => Cinders ==> Acc(30),Acc(31),Rech(31),Hold(34),Hold(37)
32 => Fire Imps ==> Acc(32),Acc(33),Dam(33),Dam(33),Dam(34)
35 => Mutation ==> EndCost(35)
38 => EM Pulse ==> Acc(38),Acc(39),Rech(39),Rech(39),Hold(40),Hold(40 )
41 => Fire Ball ==> Acc(41),Acc(42),Dam(42),Dam(42),Dam(43)
44 => Fire Shield ==> EndCost(44),EndCost(45),DamRes(45),DamRes(45)
47 => Consume ==> Acc(47),Acc(48),Rech(48),Rech(48),EndMod(50),EndMo d(50)
49 => Bonfire ==> Dam(49)
Here's another quick and dirty build for the combo you asked for originally. Again, not perfect...sort of cookie cutter that you can decide what you like and cut the rest out.
Archetype: Controller
Primary: Fire Control
Secondary: Empathy
+---------------------------------------------
01 => Healing Aura ==> Heal(1),Heal(5),EndCost(11),Rech(34),Heal(46)
01 => Char ==> Acc(1),Acc(3),Rech(7),Hold(19),Hold(43)
02 => Ring of Fire ==> Acc(2),Acc(3),Dam(7),Dam(19),Dam(43)
04 => Heal Other ==> Heal(4),Heal(5),EndCost(11),Rech(34),Heal(46)
06 => Combat Jumping ==> DefBuff(6)
08 => Fire Cages ==> Acc(8),Acc(9),EndCost(9),Immob(17)
10 => Hurdle ==> Jump(10)
12 => Flashfire ==> Acc(12),Acc(13),Rech(13),Rech(15),DisDur(15),DisDu r(17)
14 => Super Jump ==> Jump(14)
16 => Clear Mind ==> Range(16)
18 => Health ==> Heal(18)
20 => Stamina ==> EndMod(20),EndMod(21),EndMod(21)
22 => Fortitude ==> Rech(22),Rech(23),Rech(23),DefBuff(37),DefBuff(40)
24 => Hot Feet ==> EndCost(24),EndCost(25),Acc(25),Acc(31),Dam(31),Da m(46)
26 => Cinders ==> Acc(26),Acc(27),Rech(27),Hold(31),Hold(50)
28 => Recovery Aura ==> Rech(28),Rech(29),Rech(29)
30 => Resurrect ==> EndCost(30)
32 => Fire Imps ==> Acc(32),Acc(33),Dam(33),Dam(33),Dam(34)
35 => Regeneration Aura ==> Rech(35),Rech(36),Rech(36),Heal(36),Heal(37),Heal( 37)
38 => Adrenalin Boost ==> Rech(38),Rech(39),Rech(39),EndMod(39),Heal(40),Hea l(40)
41 => Fire Ball ==> Acc(41),Acc(42),Dam(42),Dam(42),Dam(43)
44 => Fire Shield ==> EndCost(44),DamRes(45),DamRes(45),DamRes(45)
47 => Consume ==> Acc(47),Acc(48),Rech(48),Rech(48),EndMod(50),EndMo d(50)
49 => Bonfire ==> Dam(49)
I hope that helped
I have a fire / emp thats almost complete with set enhancements. I can forward you the build if youd like. In looking at the build posted above, my build is a bit different.
I took things that are more team friendly, since i dont solo.
I would build either of these different as well, but I know what each of the powers do already
I was assuming the OP would want to try out most of the commonly considered "better" powers and go from there.
I want to make my first controller, and I'm leaning towards fire/empathy. I'm horrible at building characters without help, so I'm hoping someone could post a good Fire/Empathy build (cookie-cutter that works well) that I could change to fit my playstyle if need be? I couldn't find any good recent posts with build advice for this set.
Thank you!