Interconnect advice needed

I have used professional recording cables in my systems forever. Mogami is very good, but its shield is not quite as good as Canare Starquad - this will only make a performance difference in an environment rich in radio waves. But Canare is far harder to make up. I use Canare with ETI connectors when they will fit, Switchcraft when they will not.

Microphone cable costs a dollar a foot or so. Put the money you saved into an upgrade that will make a serious difference in sound quality. Cables are the least bang for buck IMO. YMMV

I agree about the importance of dielectric. Of course air is best, but teflon and cross-linked polyester are a good second. The issue with teflon is soldering - if you make up your own, do so outside and at eye level - burning teflon releases HF, one of the nastiest gasses in the universe.