7 Character Slots, What Classes

So I haven't played in about two years now, I'm thinking of doing a fresh restart and my account currently has 7 Slots available. With a Cygnus being the default first slot, what would be the best six to follow for link skills?

Phantom, kanna, demon avenger, beast tamer, demon slayer, zero

15 percent crit
10 percent damage
10 percent damage
7 percent crit 7 percent boss 4 percent hpmp
15 percent boss
10% ignore, 15% damage reduction

And the cards are good too

Thanks for the advice, I'll do just that.