Questions about fan skins

Hey guys! I've been working on my own Poppy rework for a few months now, and I'm finally to the point where I need some help from other people. I'm curious about a few things:

1. Does the LoL engine support normal maps?
2. What poly count should I be aiming for, to match other models in-game? I heard ~6,000?
3. Where can I find a tutorial for putting a fan skin into the game (including stuff on the necessary rigging)?

Thanks, guys!