@Bryan Montross This isn't the answer you're looking for but I feel compelled to provide input because I was in your shoes about a year ago. I want to touch on two things: leads and flexibility.
You didn't mention anything about leads. What most agents - including myself - don't realize is that no matter where you go (with some exceptions) you still are on your own to figure out how to get clients. Do either of them provide that for those commission splits? Because it can take either a lot of time (which as a part timer you don't have) or money to get leads. As a part timer working toward full time, I'd never give up less than 60% commission when provided with a client. And I wouldn't take less than 80% for clients I generate on my own.
Flexibility is paramount as a part timer. You have a lot of education yet to conquer and once you get going it's basically a full time job. Where will you have the flexibility to train, get support, get mentorship, and collaborate outside of work hours so that when you ARE taking time off from work or time away from family, you're doing it for actually showings and appointments? I've never once stepped foot in an office, I don't have time for that and frankly don't need to. You want tons of resources at all times and an assigned mentor who makes themselves available as well!
Just my 2 cents. Another thing to consider as a part timer is whether you'll get the exact same support as everyone else. Getting started as a part timer is no joke, but you can be successful anywhere with hustle, mentorship, and support! Cheers and best of luck in your decision!