I've neither seen nor ever heard of a 7ft gold crown.
Although it might be fun to try and make one.

hmmm...A mini-GC4 with the bronze package and super tight pockets would be way cool. Especially if that was all the table you had space for.
I've never played on a 7ft. Diamond, so my questions to you are...
a) how tight are the standard pockets on them?
b)are the side pockets tougher than the corners ala the Valleys?
c) in general, does the table play with balance like a well-set up Diamond 9ft?
or, is it that huge corner type of play found on all bar tables that I've ever seen?
...the easier the table the more turn the operator gets.