Talking about a fold down Dob, Iceman has a 10 inch meade truss lightbridge for sale in ice trade for $900 brand new in box this would be fairly portable and would leave your other options in the dust for viewing. Also have a look at the 6 inch scope and tripod in ice trade they want an offer you may pick up a bargain and then it is not to big an outlay for camping. I think it is listed by Maksutover.
Regards Matt.