Gishki deck

I currently OTK about 33% of the time... Wondering if you guys had more experience with the deck and had some tips to make mine better.

2 Gishki Zielgigas
3 Evigishki Soul Ogre
3 Evigishki Levianima
3 Gishki Abyss
3 Gishki Shadow
3 Gishki Vision
1 Morphing Jar

3 Gishki Aquamirror
3 Trade-In
3 Salvage
3 Hand Destruction
2 Mystical Space Typhoon
2 Swords of Revealing Light (only because I don't know what to put in it's spot)
1 Monster Reborn
1 Card Destruction
1 Heavy Storm

1 Royal Decree
2 Aquamirror Meditation

Extra Deck:

Skypalace Gangaridai
Coach King Giantrainer
Number 87: Queen of the Night
Gachi Gachi Gantetsu
Number 15: Gimmick Puppet Giant Grinder
Hieratic Sun Dragon Overlord of Heliopolis

You're using way too many ritual monsters. Pick a build, and stick with that. Either drop all the level 8's, and add third Zealgigas, or drop the Zealgigas, and focus on the level 8s