Yamaha is good, no denying, that said, but I'd be inclined to wait for 50hp. No point getting something and then wishing you had more horses on tap.
That a lot of cash to be laying out for a Flatacraft (no offence to current owners)
I'd have thought most dealers would be wanting to bite your hand off and do a deal. I'm on the Tohatsu outboard forum, and a lot of boaters state-side are buying them, and they look the absolute business.