So I would like a little bit of unit management advice. I have the plat mage Garania at level 50 and have 2 valeries and 1 of my 7 Craves (Damn 2k summon gave me 4) and the plat fairy to CC, but I don't know if I want to sacrifice my valeries and CC Garania and raise her cost. For other mages I have a 50CC36 Valerie (CRd once), and a 22 Cyrus. Today I also witnessed the horror that raising a unit's cost can do on some maps as I barely 1 stared Golden Armor H since I CCd Chloris (Saved by Sherry

). Strangely, the next attempt I did the same thing and 3 starred it no problem. Healers must have been stupid.
Is it a good idea to limit myself to 3 mages at the moment and CC Garania (and kill some Crave), or wait until I get more units to get more variety?