gearing with 35's

So i am running 35's now and the dirt is definately bogging me down. I have the 05 4.0 4x4 so believe it came stock with 3.73 and am debating 4.56 or 4.88. I do still drive my truck on the highway to and from desert so will be nice to still do 75 on the fwy but main concern is like on mohave road with stock gears and 33's i came close to running out of gas before. Eitherway any help with my decision based on your experience will help. Also what gears did yo ubuy and best place to buy them from for pricing will help as well as how much it costed you to get them installed.

Thanks

 

Closer to stock I'd go with 4.88s, slightly under geared and MAYBE slight MPG increase go with 4.56s, and get them from ECGS.