Hi! I’m going through the same process right now. Not quite 90k, but I’m cataloging about 25k photos that I took between the ages of 12 and 36. My process has been roughly thus:
Organize photos by year in individual folders for each year. This was a manual process that took forever. No way around it!
Organize by season within each annual folder - Winter, Spring, Summer Fall.
Use OSX batch rename function to rename all files according to year and season.
Use Lightroom to resize everything to 4x6 inches at 300 DPI. The early digital photos are way too low-res to be usable and the newer digital photos are unnecessarily high-res. Resizing everything this way makes them print-ready and at a size that makes them practical to post or share right away.
Use Photoshop + Dehancer to add light film emulation using the Image Processor function. Added Gaussian blur to older, low-res photos to mask digital artifacts. Those photos are blurry, but with heavier film emulation they could pass as super grainy 110 film shots or something.
From there I tagged the photos that I thought were the best within a given year. I was left with between 400-700 photos per year that I thought were better than others.
Hi! I’m going through the same process right now. Not quite 90k, but I’m cataloging about 25k photos that I took between the ages of 12 and 36. My process has been roughly thus: