Personally you don't have to worry about team setup because nowadays you only have to beat e4/e8. Hell you even have lots of event 5* on your team which will bound to be replaced with gacha 5* sooner or later. I'm not saying event 5* aren't worth it, they still useful for early whaleship campaign (slots+elements), but in future they will be benchwarmer/speed modifying unit.

Just keep going, dmm fkg endgame is still far away (ultimate map, nation map, skill based map).