I've seen LC200s with 17" 4Runner and Tundra wheels. I can't imagine the GX 460 would have any caliper fitment issues.
The tire options in 265/70/17 are not bad. But stock Toyota rims are 7.5". If you want more tire, and tire options, find a 17x8 rim and 285 tires.
FN Wheels are going to offer the look of that TRD Pro rim in an 8" width. They also have some other 17x8 options.
Walker Evan wheels are also a good choice, but look pickup truck to me.