Don't solder anything until you like what you hear. Just crimp the wires first. Even if you like what you hear, wait for another week just to be sure.

You can attach the resistor across the two poles of the tweeter directly if that's all you're going to do. It don't look like you're need a cap to attenuate or cross early, seeing its only 92dB eff and rolls off at 1.8K.

Again, try different values first to see (hear) what you like.

Gar.