well i did my first fuku in a new server and what i did was i went for the minato edo 4 star and pulled killer bee from time limited treasure for a decent support. and all remaining coups were spent on potions and a little on plates for vials. it seems like the best way to spend this fuku if u dont have any ninjas yet.

you c*so go for kakashi summer as he is op and cheaper and can carry ur whole team and get minato in fukus for another ninja.

but if u really patient, its better to not spend on this fuku at all cuz the 25k milestone doesnt give as much power as the usual fukus.