How much power and torque would it produce afterward?
Since there are track days planned in the future, I'll suggest this scenario with two sets of wheels and tires. First set is a street set with dedicated summer tires. In this case, it can be a nice set of aftermarket wheels of your choice, but the more important aspect is the tire compound selection. RE11 is suggested a lot in this forum and it may work for your application. Personally, I like running MPSC or PZero Corsa on the street for a high-powered car.
The second set is for the track only. To minimize cost, the stock wheel set can be used with a set of scrubs. Scrubs can be had for a very low cost and nowadays they are available in 19" sizes, although there are a lot more sizes in 18". They usually run about $100-150 a piece.
Why run scrubs for racing duty? Because these tires are designed for road courses and they're more durable when it comes to high operating temperatures and high lateral-g loads. They're a lot less likely to overheat and to lose traction which means they are safer for racing duty. They provide much higher grip at operating temperatures, so be prepared to have proper suspension improvements should you choose to be more serious. For now, the brand of the scrubs doesn't matter much; Pirelli or Continental-Hoosier would work.
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