I do occasional smaller “takeouts” and haven’t had any issues.
I have an “automatic album” (or whatever they call it) where all the photos of friends and family (even pets) get automatically added to it. Then I can just request a “takeout” for that one album, since those are the photos I actually care about. It’s a much smaller download than the entirety of my Photos account.
I’m using cloudflare as my nameserver and the free API seems to work just fine with ddclient.