Max CR skill 8 so far, think I'm going to switch to farming silvers now. Shame there are no archers or mages, those are what I'm low on atm.

Leaving 1 of each for collection sake I have
5 Rogues
8 Warrior
3 Archer
7 Witch
4 Pirate
4 Vampire Hunter
6 Bandit
9 Healer
6 Valkyrie
2 Heavy
3 Mage

For evolutions/awakenings (plus a couple of useless golds.)
Looks like I'll spend the rest farming 25/2 until I get another 3-4 Heavies then I guess 100/2 for spirits or back to normal dailies.