I was just able to update an app with Aurora on latest GrapheneOS. I use a VPN too
Adapters lots of times don't transmit lens data to the camera so you can lose features such as image stabilization, autofocus, aperture adjustments, and metadata. Though I believe MD lenses are manual to begin with.
With that budget I would say get the Canon EOS R100 which is on sale on B&H for $379 currently and normally $479. Then get the FotodioX Pro lens mount adapter (MD-CRF-P) for $65. Don't forget a memory card; the SanDisk Extreme Pro SDXC 64GB for $16.
You're paying $75 total for three rolls of film. If you take photos a lot then buying a cheap modern mirrorless camera (DSLRs are dated) will definitely be cheaper.
Two great free photo editing software's are Darktable (editor and photo manager) and PhotoGIMP (a patched version of GIMP to make the UI similar to Photoshop). Bruce Williams on YouTube makes great tutorials for learning how to use Darktable.
Since you are primarily taking photos of your kids I suggest saving some money for a cheap hotshoe flash. It'll really benefit photos of people.
Color accuracy is one reason to not have red shift on all the time
Fantastic, thank you very much