Dump all the folders into digikam. You can rename, reorganise, dedupe, add tags, detect faces, add geotags and so so much more. It will take some time and doing but you will have your entire photo library in the exact shape you want.

Yes 5G might be good but not sure about latency, NAT, port forwarding and all. Haven’t ever used mobile networks for homelabbing.

Really upping the production quality