If you can get into Ivy League schools, you can most likely get into the BHP at UT Austin (even though I know countless people accepted to Ivy’s without BHP). Calling UT a so-so school is flat ignorant.
UT has great connections to investment banks, specifically BHP, which has a 100% employment rate after college. It is actively recruited by companies in the league of Goldman Sachs.
I’d go to the school that offers you the best financial package. There’s no point of paying 150k more to a private school for the sole reason of having more connections. The schools you’ve listed are elite in their fields and will give you close to equal opportunities in their fields.
For UT computer science, I was at an information session yesterday. The average starting salary is 80k in the Austin area and 100k+ in the Bay Area. Countless students get internships at google, Microsoft, apple, their FRESHMAN year. A lot of that has to do with them being a top 10 CS school. Just like UT McCombs is a top 10 business school, you’d be offered similar opportunities.