5 Fatigue - we get SP fast already, so why not get it even faster? I can do up to 3 F7's on Titan before my Transform runs out on legit runs
5 Steal - it is surprisingly good damage and increases your damage overtime
5 Potential - This > passive 2500 attack since this gives you 2500 attack as well as other stats
5 HP - you get the attack cap already from stealing damage as well as the initial attack boost from transforming, so all that's left is to stay in transform as long as you can which 2500 hp does help with