I ride my ss dj at quarry ridge, it's 34 x 17. I can make the sandy climb with it but only once and it's a bitch.
If I'm gonna do laps I bring the geared bike, but I am a total granny gear climber cause I save my energy for the way down. I have the balance to climb the sandy bowl at .2 mph so I do it, nice and easy.
I have a 21 rear cog that I don't use Bin if you want to borrow it your more than welcome.
I rode camrock once with 34 x 17 and it was a major pain in the ass too.