you might want to run a bit to move back and fireball but when you get some experience with fireball you'll notice you'll do better with teleport
boots? probably waterwalks 65 life-15 dexterity -5%max fire res
stealth is nice for fhr/frw
i'd go with shael/pskull/um'd vmagi
pskull is probably a good choice for replenish
wizspike or suicide branch is good (life all resist/max mana/1 skills)
you can get a jewel like 15 all resist/7%fhr
edit : skill wise max warmth fire mastery/maybe 1 into enchant to help out your buddies for T(eam) v T
if you plan on running around a bit maybe max blaze to

? spam that till your enemy get close and spam FB and the damage stacks up pretty nicely
put a few into teleport/chill armor/Energy shield as supportive skills