So taking what people have said into account while making a few changes of my own I've come up with a new decklist for you guys and @DemonVamp to mull over:
Pokemon
3 x Turtonator GX
2 x Ho-Oh GX
3 x Volcanion EX
1 x Volcanion
2 x Salazzle GX
2 x Salandit
1 x Starmie
1 x Staryu
2 x Tapu Lele GX
This is pretty much the suggested pokemon lineup.
Item/Supporter/Stadium
4 x Professor Sycamore
3 x N
3 x Guzma
2 x Kiawe
3 x Ultra Ball
2 x Nest Ball
3 x Fighting Fury Belt
1 x Choice Band
3 x Switch
2 x Field Blower
1 x Rescue Stretcher
2 x Scorched Earth
Added another Guzma and went in for a 3-2 Ultra/ Nest split. Ultra Ball is mainly for getting out a Tapu Lele for early Kiawes. I didn't want a super heavy ball lineup though. I took what @Duo said to heart and replaced most of the Choice Bands with FFB. I did however wish to leave one Choice Band in the deck for various situations that might arise, such as a late game scenario where Starmie has been picked off and I need to oneshot a Gardy with Salazzle and have no energy for Steam Ups. I did pump the number of Switches up to three as well.
Energy
14 x Fire Energy - Basic
Pokemon
3 x Turtonator GX
2 x Ho-Oh GX
3 x Volcanion EX
1 x Volcanion
2 x Salazzle GX
2 x Salandit
1 x Starmie
1 x Staryu
2 x Tapu Lele GX
This is pretty much the suggested pokemon lineup.
Item/Supporter/Stadium
4 x Professor Sycamore
3 x N
3 x Guzma
2 x Kiawe
3 x Ultra Ball
2 x Nest Ball
3 x Fighting Fury Belt
1 x Choice Band
3 x Switch
2 x Field Blower
1 x Rescue Stretcher
2 x Scorched Earth
Added another Guzma and went in for a 3-2 Ultra/ Nest split. Ultra Ball is mainly for getting out a Tapu Lele for early Kiawes. I didn't want a super heavy ball lineup though. I took what @Duo said to heart and replaced most of the Choice Bands with FFB. I did however wish to leave one Choice Band in the deck for various situations that might arise, such as a late game scenario where Starmie has been picked off and I need to oneshot a Gardy with Salazzle and have no energy for Steam Ups. I did pump the number of Switches up to three as well.
Energy
14 x Fire Energy - Basic