Hope that SIL likes grooming? It was while working for a SCWT breeder that I learned to use a dematting comb!

No I wouldn't recommend her. They would spend all day frantically doing circles in their kennels and they'd all got the hereditary kidney problem.
Have you seen this? It has lots of breed info including their health problems.
http://www.wheaten.org.uk/The bit about Wheaten Ownership is very enlightening - only for the brave!