Hi Michael,
yes I think it's a great idea to get one from a Bengal Rescue. Here is a link to one of them
http://www.bengalcatrescue.org.uk/
Breeders sometimes offer ex breeding females to single cat homes because they like their own space and can be dominent over younger cats. They are not all like that though. We have a couple of females that will happily be with another young kitten/cat and always up for a play.
Retired stud boys are happy for company too. A breeder wll just ask for a nominal fee to cover the cats neuter.