Only Version 1 of the deck so any ideas would help.

Monsters
3 Fire King High Avatar Garunix
2 Sacred Phoenix of Nephthys 
3 Fire King Avatar Yaksha
3 Fire King Avatar Barong
3 Fire King Avatar Kirin
3 Fire King Avatar Garunix
3 Orichalcos Gigas
2 Cyber Jar
1 Morphing Jar

Spells
3 Onslaught of the Fire Kings
2 Monster Reborn
3 Fire Recovery
3 Circle of the Fire Kings

Traps
2 Chain Dispel
2 Bottomless Trap Hole
2 Needle Ceiling 
2 Mirror Force
2 Mirror Wall [Anime]
2 Backfire 

Extra Deck 
1 Number 107: Galaxy-Eyes Tachyon Dragon
1 Hieratic Sun Dragon Overlord of heliopolis
1 Number 23: Lancelot, Ghost Knight of the Underworld
3 Number 16: Shock Master
2 Number 101: Silent Horror
2 Evilswarm Exciton Knight 
3 Wind-Up Zenmaines
2 Number 49: Fortune Tune


Well that's V1, any ideas?

The main idea behind it is to use at least 2 Fire King High Avatar Garunix, 1 Sacred Phoenix of Nephthys, and 1+ Orichalcos Gigas to start a loop of destruction and attacks pounding on the opponent's field and life points until something gives.