How many sets of stars for training/bossing?

A bit late to the show. For Night Lords these days, how many sets of stars do you usually carry for training and bossing? My old star set is like 3 rows of stars or something, which was for endless Newties sniping for 3-4 hours straight. Unless I really want to never go back to town, I'm sure 24+ sets of stars is overkill for anything.

8 is more than enough.

I carry 9, but im thinking of dropping it to 6.

Mostly because the places I train we either have a bishop for door, I can just exit each round and recharge [dimension and evo] or nexon gives out some useless miu miu cart thing that opens shop at the map i train at.

four sets of crystal ilbis and one set of furies for the balance