Wow...Really late to this rodeo (been elsewhere, practicing my 7 memorized words of Quechua) and I have a real keyboard for the first time in over two weeks, but you've done your homework, Bob - 17" wheels with intriguing spokes are the bomb on a Speedstah, just avoid the "thick-rubber-band" tire look.
(Look! Easy new-lines!!) My Nissan Rogue came originally with 18", Z-Rated short-sidewall 40 series tires. Looked cool as Hell. Rode like Hell, too. Can you say "WICKED STIFF"????
Replaced those with "H"-rated 50-series rubber to a dramatic improvement in ride while handling remained almost the same. Besides, where am I ever gonna take a NIssan Rogue on the track? Did it really NEED tires rated for 160 mph? Hell, NO! Looking forward to seeing what you end up with later this week when I'm back.