College registration help (please advise me asap!!)

Hello! I was accepted into Mount Holyoke College as a transfer and their deadline to register is today (they won’t extend it at all, I already asked). The fee is $300, which is a lot, and I’m still waiting for 6 other colleges to get back to me (Vassar, Bryn Mawr (my top choice), Williams, Middlebury, Wellesley, and Smith). All of these colleges are preferable to MHC (which was my backup), however, all of these colleges are much more selective, so I’m not sure if I’ll get in. I worried if I bypass MHC, I won’t get in anywhere else, but I also am not too keen to just give up $300 if my chances are relatively high. What should I do?

Here are my stats, if that helps anything:
I’m a freshman Political Science Major at UCSD (Marshall College)
My GPA is currently 3.733 (1st quarter 3.688, 2nd. 3.8)
I’m Currently in Student Council and an Associated Students Fellow
I took part in World Scholar’s Cup where my team came in 6th in the global tournament of champions and 2nd in the global round
I worked in in retail as a seasonal worker and currently work in the food industry
HS GPA W: 4.122, UW 3.7 (my senior GPA dropped my overall GPA quite low, but I already explained that this was because I was diagnosed with depression and have since fixed the problem)
ACT: 30
I took 6 AP Classes and 6-7 Honors Classes
I had tons of extracurriculars in High School, so I won’t list them all, but I did Student council all 4 years and was a varsity XC and Track runner for all four years (MVP for 2). I really want to compete in college as well.

None of us can predict whether you will get in anywhere other than MHC.

Make the deposit at MHC. Then you will have a space for sure.

If you get in somewhere else later that you like better, you can decide whether to stick with MHC, or to accept that you have just made a $300 donation there.