You should play this build only with Everburning.or you'll have Stamina problems.
The idea of this build is to have get as much heat as possible. Burning Blade and Burning Sword are generating Heat onhit and gives all your weapons damage. Double Sun Armor will generate a lot of Heat at combat start.
Frozen Flame will inflict more Cold aswell with more Heat.
You want as many Ice Items around Frozen Flame as possible. You won't have a lot of space to craft defensive Ice items if you play double Sun Armor.
Amulet of Steel can be really strong here.
Even if you have Everburning it can be helpful to use Heroic Stamina Potion if you face Shield builds.