Looking for fine tuning advice

I recently got my hands on an Aerith surge foil, which I was very excited about. I put together a deck list for it which I think looks pretty good. Unfortunately I also thought my previous decks looked good and they all play out pretty mid. My idea with the deck is A) gain a ton of life in order to get big creatures B) have pretty cards and C) stick to final fantasy as a theme when possible. Budget wise I’m pretty open, just not looking to go insane with it, probably wouldn’t wanna spend more than 50 bucks on a card. Any tips/advice would be greatly appreciated!

https://moxfield.com/decks/wbgn5ipJ-UW_i8yaknn7tA