I think the biggest point is this...you should allow all in the group, let the rider decide if she can do 800 miles on what she choses to ride...example: I couldn't on the 800 due to fatigue, on my 250 I can and it will keep up. You would just need to make it clear you can't wait for riders slower than yourself. Just give them a chance that was all... most of these ladies would love to help but don't like to be told what to ride. Women have enough to deal with and sadly its from other women more than men.