Link to another discussion that might help.
I scanFujitsu too. All to PDF. I use PDF Expert. As previously advised, turn on OCR and I would make sure for all pages, not just first page. Dropbox is great for searching PDF with OCR. I use that for work. Have files all the way back to 2007. Also iCloud is pretty good for searching on a Mac. When it comes to searching, electronic copies of everything you can get are much better than a scan. Less errors in searching. Example, if I get a maintenance manual I want to save with a product, I go online and see if one is already available in PDF. do not scan if you do not have to.
To repeat my favorite rule for paperless life. “Don’t Make Paper if you don’t have to.”