So glad you found a computing solution. I use a similar system as far as computing to inventory my supplies onto Excel. It is great because I have linked the photograph of the set to Excel so I can find all the information I need when I blog! I'm a picture person too.
If anyone is a PC user and has no hope of going Apple in the near future. I would suggest setting up an Inventory photographs folder and initially sort your inventory by Manufacturer/Keywords. Then set up an Excel System where you can sort by keywords - TBH I'm still working on it but it is every few months when the bug hits me.
The Excel system also serves as an inventory record should you need it for insurance purposes.