Replying to Ski size, binding & mounting question!

I'm getting me some 08 Seth pistols but I'm not sure what size I should get? I'm 1m81 and weigh 95kg. I've skied some Extrem AK four's at 182 for 2 years now. I think going up to 189 would be a better choise then going down to 179 since those Extrem ski's did train my upper legs a fair bit. Over-all I would say I'm an advanced skiër, and a total beginner in the park. But park skiïng isn't the most important, I would say 50% offpiste/ 35% park / 15% groomers. What would you recommend and why?

Then also, what bindings should I put on them? Remember I weigh 95kg!
And where should I mount them? I'm looking at center +2? Again, what do you think and why?

I think I've given you all the information you experts need to help me! So shoot away