Good luck Ian. That seems like a very logical move. Wish we could do that, but we still need room for the grandkids, and we live on the golf course. Probably when I get too old for golf, we'll consider a move, but after so many years in the same place, I know what you're going through.
One other thought--I'll bet you could make an agreement to provide entertainment in exchange for your rent, or at least part of it!
Regarding keyboards, Yamaha will probably make a big step forward with their next arrangers. I look for a lot of changes.
Don't really care though. We could play anything made in the past 10 years or so and do just fine.
But as you know, I'll be the first in line if something new and great catches the eye!
DonM