Alright, lets help a twin out
 

I'm looking for a set of 17's for a track setup. Just need to figure out what offset I want to go with. Ideally I want to do the same width all the way around with a 9.5.

I do have the Rockeybunny kit fitted so that is a factor. Current wheel setup is Forgestar F14's all around, -3 offset in the front, 6 in the rear (if I remember correctly, it could be backwards, but the numbers and the negative, will get the definitive answer tomorrow).

Why not another set of Forgestars? Just another model from Forgestar maybe. They don't make 17's but you could go with 18" CF5's for example which have big clearance on the inside just in case you need to run a BBK on it too. A spacer would be required, but most the wheels you'll require with the offset you need, will need a spacer.

IMO if you are looking for a dedicated track set, function over looks. I would find the lightest wheel that still have decent durability thats in-expensive(think replas or knock-offs) that will allow for the a good tire as well.