how often are the PBLS, small group, and dissection in a week? I'm from the area so I'm trying to see what it would be like if I just lived at home and commuted
Dissection is 1-2 times a week first semester until mid November, when anatomy ends. PBLs/small group roughly once a week depending on the class. I forgot to mention colleges and SIM Center (it's been a few years, sorry) which are also mandatory in person, and those are Wednesday/Thursday. And of course quizzes and exams, which are mandatory in person.
Plenty of students commute from Plano, Frisco, etc. However, it is difficult as the first semester you are required to be on campus almost every day for a few hours betwwen all your dissections, PBL/small groups, quiz/exams, colleges, SIM center, etc....
For example, in the first semester you could have:
Monday - PBL 1pm-4pm in person
Tuesday - nothing in person
Wednesday - colleges in person 1pm-3pm
Thursday - SIM center (standardized patient/procedures practice) 1pm-2pm
Friday - Quiz 9 am-10am in person and dissection 2-5pm in person
After first semester, the rest of preclerkship has a bit less mandatory in person stuff on different days. To be honest, your life will be a lot easier as a student if you live close to campus since being closeby makes it easier to participate in stuff that can only be done on campus like shadowing, some electives, some research, etc.
UTSW owns an apartment complex called MedPark where about half the medical school lives. They hold the rent at MedPark at roughly 40% below market value for the area so that it is affordable. That place would be my recommendation. UTSW also collects information and student reviews on all the apartment complexes in the area, and you'll receive that information in a packet at second look.