In what world is 70K not a “considerable” amount of money?
100% of your family income makes $70K a very considerable amount of money. To save $100k on an income of $70k means some serious, long-term saving. Think about all the things that your family has done without to be able to save that much.
You have stars in your eyes: the “prestige” of the colleges that have offered you genuinely excellent financial aid is hard to walk away from.
Technically, the question is 'is a degree from W/B/C worth ~$70K more than UofR?". But yes, is the sweatshirt worth $20K of (unnecessary) debt heading into med school?
Because between your other threads and this one, the only thing you have mentioned that you like better about these schools is their perceived prestige. You said that you liked UoR & could see yourself going there. I get the bragging rights- those are some impressive names, and you obviously worked hard to get those admissions. But hand on heart: getting to boast to your pals is a really short term thing- by graduation, it will be an afterthought.