A bit of information that may help with your weekend planning.
An excellent meeting venue or not to be missed stop off is the Yonderman Caf� at Wardlow Mires (very close to your planned route).

http://www.tripadvisor.co.uk/ShowUse...e_England.html

Additionally the pub opposite has a campsite, not sure how big group friendly they are but it�s worth giving them a call.

http://whatpub.com/pubs/SHF/107/thre...-wardlow-mires

I must admit to never using the pub but I regularly partake in a small (believe me it�s not small) Yonderman breakfast on a Saturday morning.
And sorry, not being an off-roader, I can�t help much with trails. However you may find me joining you for the road sections.