OP, you should pick up phone and call University of Houston ASAP and shoot an email as well. It may workout.
SMU is an average school and not worth the cost unless you are on heavy financial aid or near full tuition scholarship or may be if you are rich but can’t get into better schools. Barbra Bush’s girls were legacies but went to Yale and UT.
It’s not a great idea to do business major in undergrad, specially for someone on pre-Med track. Most top business schools like Harvard, Stanford, Chicago, MIT, Yale etc doesn’t even offer an undergrad degree. Even if you end up in business, you’ll need to get an MBA.