Can you help me find some settings that would help me mix tracks to have a vintage warm feel of the 1960s?

Settings on what?

Your best bet for that vintage sound is a nice vintage tube amp. However, these are somewhat hard to come by. There are some pretty darned good amp emulators on the market these days. Don’t know what your budget is but these can be had for as little as $200 and most have a couple of “classic” settings.

If you are recording on a Mac, believe it or not “garage band” has some pretty darned good amp emulation built in. There vintage finder tube amp emulator is pretty darned accurate right down to that characteristic buzz.