Welcome! Good to see more CRX's joining up. And, in the spirit of saving money, I offer this-
There have been a few threads around here about it, but I will restate. Don't worry about wheel weight if you're not racing. It really doesn't make a big difference (since aero is King)! If you're going for MPG, go get some cheap steelies, add smooth wheel covers and throw on some LRR tires.
I'm running 15x7 Chevy Cobalt steelies with coroplast covers on my D16 EG HB and I see high 40's on the freeway doing 65ish.