What parameters should I select to get a high quality voice .wav file?
A standard for WAV is 48K / 16 bit mono, or stereo if there's ambiance or presence you'd like to preserve. The last two parameters are a consequence of those choices and you can calculate them based on your selection. Then any compression you might apply afterward will have a good starting basis.

If all you're after is intelligibility, a lower sample rate may be just as good. 22K / 16 bit mono is good enough for many voice purposes. I personally wouldn't use a lower bit depth, but you can experiment with 8 bit to see if it's acceptable.