Thanks for all of the suggestions they've been really helpful
I think I'll wait until we've had a few meetups to decide whether or not to get one. I cna fit most of the gear I want to take with me in my rear panniers (i've got a very old version oaf the Avenier tripple panniers my dad got from Argos years ago, planning to waterproof them then shove gear in in plastic bags!) and may still be able to share some gear out between the group. I'm used to pakcing fairly light (plus a few creature comforts... I am a girlie afterall!!) for camping but not usually for 2 weeks' camping! argh!
Thanks for your help, I'll look into getting them in a few months' time