Personal preference. Some people prefer more forward lean than others. Play around with it and stick with what works best for you. The only suggestion I might have is to rotate your highback so that it's parallel with your boot instead of your board, but again, that's also a preference thing.
"People say that marijuana smoking is going to get in the way of my career. I say to them that on the contrary, my fighting career is getting in the way of my marijuana smoking." -Nick Diaz