well my fire sequence is :
1st:slow down
2nd:poison
3rd:hot fire

top prior: fire combo hit(im a fire mage btw) also can use hegendis hit(for fire warrior)

make sure once u reach lvl 50 u hv more than 18 wis (fiery skill need 18 wis)

take notes: full type fire warrior need to hv atleast 42 wis(its for the mess spell) :) (well atually all fire type need atleast 42 wis)XD

its not hard to set ur spd to below 60 or even 50 at lvl 50-70. u just need -spd armor(def armor) -spd glove and boots(its easy to get)
and u can get the -20 spd stone ball in culcutta by doing easy quest:)