Is this build viable - feel free to tamper with

Exported from version 1.5A of CoH Planner
http://joechott.com/coh

Archetype: Blaster
Primary Powers - Ranged : Fire Blast
Secondary Powers - Support : Devices

01 : Web Grenade immdur(01)
01 : Fireblast dam(01) dam(3) dam(5) endred(7)
02 : Fireball dam(02) dam(3) dam(5) endred(7) endred(15) recred(17)
04 : Caltrops slw(04) slw(9) slw(11) endred(40) recred(40)
06 : Rain of Fire dam(06) dam(13) dam(13) endred(19) endred(29)
08 : Fire Breath dam(08) dam(9) dam(11) endred(15) endred(17) recred(19)
10 : Targeting Drone thtbuf(10) thtbuf(29) thtbuf(31) endred(33)
12 : Hover fltspd(12) fltspd(46) fltspd(46) fltspd(48)
14 : Fly fltspd(14)
16 : Swift runspd(16)
18 : Health hel(18) hel(50) hel(50) hel(50)
20 : Stamina endrec(20) endrec(21) endrec(21) endrec(25)
22 : Blaze dam(22) dam(23) dam(23) endred(25) recred(31)
24 : Aim Empty(24) Empty(48) Empty(48)
26 : Blazing Bolt dam(26) dam(27) dam(27) endred(31) endred(37) recred(37)
28 : Trip Mine dam(28) dam(36) dam(36) acc(36) endred(37) recred(39)
30 : Cloaking Device defbuf(30) defbuf(43)
32 : Inferno dam(32) dam(33) dam(33) endred(34) endred(34) recred(34)
35 : Time Bomb dam(35) dam(39) dam(39) endred(40) recred(42)
38 : Grant Invisibility defbuf(38)
41 : Char dam(41) dam(42) dam(42) hlddur(43) endred(43)
44 : Fire Shield damres(44) damres(45) damres(45) damres(45) endred(46)
47 : Rise of the Phoenix recred(47)
49 : Recall Friend endred(49)

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01 : Brawl acc(01)
01 : Sprint runspd(01)
02 : Rest recred(02)

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If you want to get ANYWHERE, without dying of impatience, Slot fly

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If you want to be in shape to immediately fight upon arrival between 14th and 20th level, slot Fly for endred. (It costs about 2 End/sec; before Stamina, you regenerate 1.66 End/sec.)

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DCUO and CO will never see my money. The Citygame will keep seeing my money for as long as I keep enjoying it

Hmm...
A few things:
1) Definitely slot fly with endred - really nasty end cost otherwise
2) Not a fan of Rain of Fire personally: causes fear as enemies scatter (not good for AoE ) but I've heard good things if combined with caltrops, so... up to you, I guess.
3) Don't see much advantage in putting 4 flyspd in hover or 4 endrec in stamina - bonus from 4th slot doesn't seem worth it. Try putting some more in fly (endrec and flyspd).
4) I'd suggest 2 recred in Trip mine rather than an endred.
5) Inferno costs about 20 end to activate but drains all end if it hits so I'm not sure if slotting endred is worth it...
6) I'd take smoke grenade in there somewhere too - surprisingly handy for -perception (not so much acc debuff sadly...)

Anyway, hope that's helpful but overall, have fun and remember: it's your character.

(Oh, and you might want to put some SOs in Aim )

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all that bright yellow ink...hurts eyes...please change text colour

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He will honor his words; he will definitely carry out his actions. What he promises he will fulfill. He does not care about his bodily self, putting his life and death aside to come forward for another's troubled besiegement. He does not boast about his ability, or shamelessly extol his own virtues. - Sima Qian.