My own experience with wireless mics is limited and the opinions of experienced users vary, as usual. The safe route is a true diversity UHF system, but if you're in the middle of nowhere VHF is probably not all that risky.
I bought an inexpensive Azden SGM-X, made for mounting on a miniDV cam (shorter barrel than most). I mount mine on a miniRover to keep some distance from camera noise, and I use a Beachtek unit under my VX2000.
I can't imagine being able to import mini disc into Premiere, unless you can feed the analogue output to a camcorder first, then capture via firewire. I don't know the physical output connections on mini disc well enough to be sure. Often people resort to using the headphone jack as the output source but there must be a way to get cleaner source than that.
David Hurdon
http://www.contentshop.tv