Which direction with AA+ formation

So I have a few directions I could go with my formations but am sort of loss when it comes to AA formations and what is important. I have an AA+ mystic form that is all max level but not skill and consists of Olu(5), Posiden(8, Dru(20), Turvin(6) and Venus(1). So far this team seems pretty underwhelming and seems to lose a lot. If I finish turvins skill and change posiden to dea would it do better? Or would I be better off finishing off my crawler form that has Repulsive, Crimson, Hellish, Forrest Moth and Demon Bait for agi. I would skill change repulsive and hellish to ipa and ded so the team hits harder. Or the third direction I could go is to pick up a cheap Wingarm and a Tasaka to add to Repulsive, Crimson and Moth for a 4x combo with around 105k attack. I just dont want to waste anymore EPs on things I will regret later.

Thanks for the help.

Keep with the mystics. It's a very powerful team, and not many people run mystic down. The other cards you could add - elsie, luffy, Steel vines, Borabant, Kyushi Fungus, Necrotic Fungus - have a better skill profile and are going to have better stats. They're more expensive, but it's better than investing all that ep in a crawler form that you won't be happy with.

I do see what your saying it dies have more options as far as upgrade paths.