What do you mean by the southwest? Arizona and New Mexico have only 3 programs between them, Colorado's only program is in Denver, and the southern California programs are mostly in LA/San Diego. UCLA is probably the most competitive of the bunch, and I wouldn't really count that as southwest. One problem you may run into with child fellowships is that they often fill up with recruits from their own general programs: UW has 5 spots but in my year, only 1 spot was open to external applicants and the following year, none. In AZ/NM, I was most impressed with UNM's general and child programs.