[austin420]

im sorry i cant be of more help. i can only tell you what i run and why. i use the acs-dk17 by konane. its essetially a stock rom. just a slightly tweaked version of one of the leaked betas.
it works for me. i actively avoid aosp or vanilla roms. touchwiz is just as customizeable as plain android. everything from vanilla android is still there with impovements to the gallery and music player. the only diffrences i notice are the dock apps are diffrent from vanilla and the app drawer slides left and right instead of up and down. since we got touchwiz 3.0 now you can change out the dock icons, so that makes it a little better than the touchwiz on 2.1.
i dont require tethering. i have buisness class internet at home and a clear hotspot on the go from my job, so i cant help you there.
1ghz is also fine for me. i tried overclocking and could see no diffrence in everyday use and im not one to go around touting quadrant scores, so after a little playing, i decided to leave it at stock as far as clock speed, so sorry, i cant help you much there as far as finding a rom for that either.