I thought it would take 1-2 days, and it ended up taking 4 full days to paint my art studio. I needed to spackle holes in the concrete and fill in a few cracks which meant 3 layers of paint in some places. It was so worth it! "Frosted Lemon" paint brightens things up and at least looks warmer even though it's still a basement.
Another homeschooling family just took 4 full boxes of materials I cleared out in order to make room for my glass supplies. It felt good to pass on the blessing of free curriculum materials - and it feels even better to have more space to work.