Here is some info on the antenna mount and others:
http://www.cometantenna.com/amateur-...nts-with-coax/
Comet also makes some decent dual band antennas:
http://www.cometantenna.com/amateur-.../ma-dual-band/
Like you mentioned, I would talk to some of the club members and I'm sure they will help you select what's right for you.
Also, regarding the radio - Some of the newer radios have removable control heads that are easy to install on your dash with a small cable running to the radio which you would mount under the front or rear seat.