LnS
Impossible dream: If you find one will you let me know, all those lovely attributes for a mere £15,000? I've wanted something like that for eons....
Can't think of anything like that, but a solution might be to go into a syndicate, e.g. a CAP10. At the end of the day it may come up with your needs for a similar outlay. Not in a group, but I believe there are some good ones out there.
Or why not offer a sole owner of such a nice type, to pay their overheads (insurance, hangarage) for access to their aeroplane? Might not be as daft as it sounds. Or get an Emeraude on the French register, then you can aerobat, but not in G-reg!!
Good luck with your hunting
Cheers H