19 15+4 0 (lair + harmonize)
9+3 2+2+5 3 (hawkeye + enchantment you want + little beastie)
12+3 11+1 0+3 (bow + reveal hawkeye + shoot )
9+6 ? ? (big creature time!)
I see no problem. Active creature in round 3 + shooting
Or if you don't want to harmonize your lair:
19 15+2 2 (lair + harmonize on Bm) --> reveal during upkeep (costs 4, gives 1)
8+2 2+5 3 (hawkeye + little beastie) ---> you do waste an action. Or you can run around a bit
13+2 11+1 1+2 (bow + reveal hawkeye)
11+4 ? ?
This is just out of the top of my head, maybe you can do even better.