We (two seniors) have booked (for early October, 2016) five nights in each of Springdale and Bluff as bases to explore, primarily, Zion, Bryce, Grand Escalante/Highway 12 (from Springdale) and Monument Valley, Mesa Verde and the Arches (from Bluff). We don't mind the bit of extra driving involved to avoid changing accommodation often. We will not be hiking. Does this look to be a reasonable approach, providing 4.5 full days in each base? Of course, it is impossible to see everything so we're happy to take what comes after nailing the priorities in each of the parks noted above. Any corrective advice?