Thanks for the all the tips and opinions. My plan before this sale was to buy this Fall - I'll be in a better position cashwise then than I am right now. I think I'm going to stick with that, and cross my fingers there will still be deals on the 16 Indy then. I can't imagine if they are blowing them out now in January mid-season that there won't still be some around then. I'm going to keep thinking about it though - I can't do anything before President's day either way anyway.
As far as SP vs base, it seems the SP is worth the extra coin because you get better skis, shocks and handlebars out of it. I may or may not switch out the track but even if I do, that won't cost much since I can get decent money out of the one on it.
I'm not big on winding out the top end on a lake or railroad grade, so I think the 2 stroke is fine for me...