Hey, I from TX too! In Cypress, northwest of Houston. Flat as a pancake around here. I have to go a little north to see anything more than an overpass. 12% sounds pretty steep to me too, but I think you will be able to make it. In the BP MS150 when it goes through Bastrop St. Park it can get a little steep also but my wife made it up with her triple just fine. Just pace yourself and the 2/3 of a mile will be over before you know it. Good luck!