Im more worried about the offset .. is that offset okay??

It's a very low offset for these cars. But if you already have it mounted, Just keep it until it's time to change the tires again. Then get right size tires and wheels.

Some great setups done right here:
Look at rocketbuny, silver14 and minimacky : https://www.clublexus.com/forums/is-...lusive-77.html

corradomr2: https://www.clublexus.com/forums/is-3rd-gen-2014-present/762031-aftermarket-wheel-showcase-3isx-exclusive-76.html#post9964525