I commute to San Diego from Campo daily. It currently is costing me $21/day in my Corolla. I put over 2,400 miles on my car a month and during the winter I get to drive through snow that can reach all the way to Descanso.
If you are looking for a 20-40 year holding period, Campo may be a good investment. But I doubt it.
I don't see the same development happening in Campo. There is no master plan that I am aware of for putting tracts of single family homes, apartments, ranches, and commercial development to serve the area as there was in Rancho California/Temecula. I believe San Diego County has not included a plan for developing it in to a something similar to Temecula .Rather, the plan in place calls for leaving a lot of the back country undeveloped. Temecula was ideally suited to be a bedroom community for Los Angeles, Riverside, San Bernardino, and San Diego counties. Campo, not so much.
I am not aware of any public transportation that would alleviate a long commute.
If your goal is long term, awesome appreciation, I would be happy to sit down with you, listen to your goals and situation, and give you the benefit of my years in Southern California as a Banker, Financial Planner, and Realtor.
I like the way you think : )