Kev,
Regarding the affordability of the 19. 5" wheels and tires...
I justified my purchase of Rickson wheels and Toyo tires based upon the longevity of the tires. Granted, it will take a long time to wear out these tires if they last the 200,000 or so miles that I expect them to, but at the end of those 200,000 miles my Rickson wheels will have paid for themselves because of the two or three sets of 16" tires that I didn't have to buy.
That's my story and I'm stickin' to it.
Loren