Enkei RFP01, 9 pounds and ~$220 each. Done.

If that's too pricey, then Kosei K1-TS, 12.5 pounds at $135 each.

If that's still too expensive, maybe try Kosei K1, 13.5# @ $115 each.

If that's still too expensive, you should either stick with cheap stock wheel or consider another sport...