Lineup

Well from what I can see you 2 of your 3 5* stars go good together (Dantes and Jack), so put both jack and dantes on your front line along with either support waver or hans. Hans could be better on this team for his star gen, since this is a quick team. The back line I would put either some survivors like cu or more quick servants like kintoki.

I'm sure there's better team comps you could make this was just a quick little team I put together, plus this is probably the most use you can get out of dantes right now and i'm sure you want to use your 5 stars.

Crit team
Jack, Hans, Emiya/Kintoki, Backup star gen(shiki or dantes), Backup crit damager(can be your support servant), Fill slot for support, crit, or star gen servant

Have a crit damage dealer (dantes, kintoki, and emiya post strengthening) with jack as your star generator. Could also pair jack with Altria alter. Sure she doesn't have a star absorption skill but because you have Jack it makes it a moot point. Would be nice if she had a crit damage booster but she does have a buster booster instead. Buster crits are sexy. You will need to raise a tank though to protect them both. I recommend Leonidas over Georgios since he has lower star weight. Theres also best kouhai Mashu.