Yes I lived in the student housing. The loan I took out included additional funds to cover living expenses plus I had some savings.
If you have your Assoc you don’t need your PPL. You have to take an Intro flight if you have no flight experience. FYI, your written exams are not required prior to training but highly recommended. This link will give you whatelse is required: https://atpflightschool.com/faqs/bring/items_for_acpp.html
Different people learn differently. There are many factors including intelligence and work ethic. That said I’ve yet to hear anyone say the training was easy. The program is highly accelerated and requires a tremendous amount of hard work, discipline and self study. Challenging is a good word.
The Regionals don’t require any degree but if you aspire to fly for a Major some day you will need a Bachelors.
I wouldn’t say a lot but you do have to do some. When people ask me about math in aviation I give them this as a gauge. A compass has 360deg, you need to be able to figure out the reciprocal (180deg opposite) of any heading (number) on the compass relatively quickly (ie, the reciprocal of 360deg is 180 (and visa versa, 90/270, 121/301, 037/217, etc). If you can do that easily (for any random number) than you’re fine, if not you need to start working on your math.