+4 on Kuryakyn mini boards with drop down. I'm 6' and the boards give me about an 80-85° bend at the knees. I like this better than going the full 90°(or the 70-80° stock position) because it allows for easier posting over pot holes. There's a company that makes an elaborate foot peg relocation kit if you prefer a totally forward riding position, but it'll set you back about 700 bucks, I think. The other thing to consider is physical fitness and quad/hamstring/core strength. You're pushing around a 900 pound motorcycle and an ergonomic position can only supplement a moderately strong rider. Don't give up until you are fully satisfied, either. It's a fantastic machine but you need to be comfortable to fully enjoy it. Good luck!!

Jason