User blog comment:Manushster1/please help me manage my units/@comment-80.229.156.13-20151224215234

A general rule is to keep one keep one of every RS unit.

With your limited cost I'd say you should focus on leveling while the 2xexp is going on so you can fit a full team of 7* units.

I'll suggest a team of 3 (7*) which will do fine with quests.

Chrome - Lead

Shera

Melchio

You can fill the last two slots with Griff and Nadore when you have enough space for them.