The road to Hidden Valley from the N (by Buffington Pockets) is now 4wd HC. Supposedly, one can take a more fragile vehicle to Colorock Quarry on the W side, and hike part of the way into Hidden Valley.
Consider Anniversary Narrows and Bowl of Fire (NOT VofF) -- very scenic, mainly just walks, off the Northshore Road. I can give you starting mileages from the T where Lake Mead Drive (past toll booth) Ts with Northshore Drive.
Even the parking place for Redstone Peaks will give you a chance for caried scenery.