okay, I'm a bit late but-
let's be honest....
some Jeepers have their priorities straight, and others not so much.
some would rather spend their money on their Jeep- others choose the fancy hotel life :P
how bout two groups?
I'd rather see the crowd all together,
but second best is two big groups.
Sparrows you seem to be running this,
maybe call the hotels/camping places- see if we can get a big group discount/reservation,
and if at all possible maybe get the two places within walking (or stumbling) distance?