27″ iMac 5K i5, Catalina is installed all software up to date.
I currently have 7 Photos libraries. I would like to combine my system Photos library with 2 of my older libraries. To do so would create one library of about 216GB.
1) Is this too large a library to use as a daily accessed resource?
2) If I combine, will I lose any info from the old libraries i.e. edits, face names, albums, etc?