This topic came up recently so I made it a point to take a pic of my wake at a GPS confirmed 18 mph with just me on board (see below). I think the issue of "what is the slowest speed that a boat will throw a clean wake" is one that most buyers overlook, and probably most boat salesman don't mention (of course, they want you to buy the bigger, more expensive boat). My brother fell into the same trap - he bought a new 24' Tige as his first boat in 2005 and at the time, had three kids under 11 years old (and a timid wife). He soon found out that his boat needs to go a minimum of 22 MPH to get clean wake so his kids and wife to this day are still wakeboarding in white wash because they are not willing to wakeboard at 22.
In your situation, I think you will be happier with the LSV and the fact that the LSV will fit in your garage is a huge added bonus.
http://i250.photobucket.com/albums/g...c/0ef1469b.jpg