What is your honest wheel budget? If you shop around online, you could probably buy these in 17x11, for around $400/each. American can drill a 5x5 bolt pattern in them, for you.
http://www.americanracing.com/wheel/...torq-thrust-ii
A 10" or 10.5" width wheel is too narrow, for a 345 width tire. You probably need a 17x12 but those won't be inexpensive.