I did what Loveless said o:
Max power/cooldown for aimed shot and power shot, you're going to love it if you get ganged up on. Waiting 12 seconds for a skill to cool down with 3 mobs hitting you isn't fun.
I did SP consumption for my poisons, and tested it out on multi-shot. It's really useful to put in sp consumption on multi-shot if you AoE a lot, because if it costs 125 SP per shot, putting in one point and making it 100 SP per shot is really SP saving xD