Is Bear Notes viable for storing a lot of files?

I’m keeping most of my files on iCloud, and I’m repeatedly running into the problem of having some reference files that belong to multiple categories. Dropping files into Bear and using tags would solve that issue for me but I’m worried about performance.

Would storing hundreds (or even thousands) of files, mainly PDFs and images, in Bear degrade performance by a lot? Would the risk of losing the files be greater than if I kept them on iCloud Drive?