Enemies in most fire farms have fire attacks but should not have fire defense. You can build AE mission enemies like your own toon, choosing a primary and secondary powerset.
On my farm I have the primary powerset as Fiery Melee with either Scorch, Fire Blast, Incinerate and/or Breath of Fire. Secondary powerset of boss creatures is Super Reflexes with Practiced Brawler and Quickness, neither of which increases the mobs defense level to any attacks.
So the fire creatures have fire attacks, but not fire defense. As long as your fire defense is up to par, you should be able to easily take them down.
My map is named 'Red's Cave Map' (#531025). I just made it a couple of days ago. It's like the map you listed but all the enemy groups are static with no patrols. I find this easier because I don't have to go through the map a second time looking for any patrols I missed.
If you are just doing ticket farming, I would suggest my other farm - 'Red's Fire Farm' (#508607). Go until you reach 750 tickets then hit the glowie to end the mission and you'll get another 750 tickets and be at the ticket cap of 1500. Rinse and repeat for as many tickets as you like.
I'm not sure what the mish number is but Burn The Witches is a fun fire farm.
"Theres a saying that perfectly describes reading a majority of your posts, "Like being bukkaked with stupid."" -Demonata on JMan
I am looking for some good AE missions as a fire brute to help me earn tickets.
Currently I am doing 511104 Fire Cave but I think being fire creatures that they would be more resistant to fire, not less.
Thanks