Hi! Congrats on your admits!
I would not count on the scholarship money but perhaps - you never know but PT programs are fairly stingy (different business model) compared to the FT programs. There are trade offs obviously as you get to keep your job and generating cash, so hard to claim you are poor per se.
I would venture out and say it is going to be a tricky pivoting during an evening/weekend program. Your work load, classes, etc will make it challenging to focus on more than just to survive your days. One challenge with the weekend programs is recruiting. They rarely have a recruiting component to them - has this changed lately? Usually as a part of the WEMBA program, you recruit on your own off campus OR you try to join some of the FT events such as coffee chats and speaker series and job fairs, competitions, etc. These are not heavily promoted to the PT students but you can usually get access to them. Some schools are a bit more protective of these to make sure that FT students find a job but it is not hard to get into them really. However, if you are a 5-hour drive away from a coffee chat, it may be challenging.
My guess though is that you are unlikely to benefit from the on campus events due to the timing and coordinating at either Ross or Booth though you would more likely to make the Ross ones and hopefully see some friends/familiar faces but lack of a summer internship makes career transition challenging.
I usually recommend the school you are closest to. Make logistics easy to get as much value as possible but since Ross is not really near a job center, once you graduate, you will likely lose most connection with your alumni base (maybe I am off here). I think that would be a different situation with Booth - you would be in Chicago I assume and looking for a job there, leveraging the alums which heavily dominate the city's financial offices. However, still tricky to get a job without any background in your focus industry.
So I would start looking at it from the opposite end - in 2-3 years when you graduate, how will you find a job? Are you planning to use on-campus events or alums? If you are hoping for on-campus, I would pick Ross. Alums - i would pick Booth. The question with both of them however, will be WHY would an employer hire you vs. someone with a background in Fin services? Perhaps your current engineering role can contribute to it in some way and make you a stronger candidate that way but you have to look at yourself from the employer's point of view - why would they hire you (an MBA is not sufficient by itself)
Hope this rambling was somewhat helpful