I suggest a few more to throw about ideas first...Maybe another post in the section to actually decide a location. I'm biased I say Northampton
Easy to get to for most from either way, however stick a post up either in the thread already there or start a new one, for the members in the area to make some ideas and discuss places with routes. I have a rideout planned in August that is an overnight camping jobbie...Maybe a good idea for a few to turn up and sit and chat round a campfire and throw ideas at each other?