I feel you are about right for the area and speeds driven. If you want better mileage find your sweet spot, on my 12 Ram it is around 59 mph, on my 10 Ram it was 74 mph. My 08 Super Bee has its spot at around 74 mph. In most cases the extra mpg is not really worth slowing down to achieve if below 70's. I also find I get just a good if not better mpg with MDS shut off. The transmission and motor definitely feel better with it off.
2012 DodgeRam 1500 4x4, 20% Tint, Running Boards, Class IV Hitch, 14" Win Muffler, Catch-Can, Tow-Hooks, LED Tailgate Bar
2008 Dodge Supe Bee, Catch Can, Backup Camera, 20% Tint all windows, CAI, AFE Filter