Compromise w/grandparent visits? Thoughts?

Hi everyone!

I posted here yesterday freaking out about my mom wanting to move to the same city as me to be close to my yet to be born son. She and I have a turbulent relationship and have done best with some space. We were on no speaking terms until I moved away.

She lives 4 hours away by car, in the same city as my dad. My sister lives 2 hours away, almost exactly halfway between my city and hers.

My compromise is going to be that we go spend one weekend a month with her in her city (staying with her, etc.) and that way we can also visit my dad. Then, another Saturday in the month, we go visit my sister in her city, and meet my mom halfway and all do lunch and something together for the day.

Thoughts?