DEFINITELY interview with UTRGV... Don't close any doors you don't have to.
You are going to hear MD > DO advice from many. I personally would choose any MD over any DO if given the opportunity. Not having to pay the "DO tax" and having generally better resources means a lot to me. However, if location is more important to you, it's not unheard of to choose your local DO over a "more reputable" MD. I know someone who turned down an MD school in new england to attend a California DO.
Also, at least UTRGV is still in the same state! Im sure you could do weekend trips home, no?