Best place to boondock off I70 in CO

We are headed west to Utah via I-70. We are in a RAM 3500 dually and 35 foot 5th wheel. Looking at Deep Creek off exit 133 but open to other areas. Planning on 3-4 nights. Does anyone know the area? is it muddy, safe, starlink or T-mobile there? Is there a better place. Lyons Gulch better for the 5th wheel?