Update in case anyone feels like they're in a similar situation...
I wound up with some used 325 T boots, thermomold liners make a big difference, and the extra stiffness was no problem at my 155 lbs, and I ride them locked in position too. BTS might come later. Despite being light, I'd probably grab some pretty stiff springs with it. Used to the 5 position lean locked in position.
I picked up a 172 donek axis, not the FC that I was originally looking for, but I'm quite happy with it. Takes some effort to make it turn at slower speeds, but get it going a bit and it loves to rail into turns. LOTS stiffer than my F2, especially so between the feet, it seems.
I had a day of great conditions at sunapee, got to work on the "reach for the opposite boot cuff" drill, also after a bit of that I concentrated on dropping my hips without "sitting"
Also got the feel for weighting the board while in carve. Saw some effects of initiating with pressure on the nose and moving my weight backwards throughout the carve. Seems that I can't weight the nose like that in the softer stuff, had a few that just didn't initiate and I went for a nice slide.
Can't wait to go back up there, hoping for more conditions like that. Days at okemo and stratton earlier in the season didn't do a lot for me, too much of a powder/ice mix.