I did it myself with a small 4.5" grinder and a dust cover attached to a shop vac. No HEPA filter needed when you have a bag in the shop vac.

One downside is that you're always bent over and on your knees so your back and knees might hate you for it.

It takes a long time with a small grinder. Depends on the surface, obviously. I was doing half my basement.

A larger machine from home Depot might do it faster and also might allow you to control it while standing upright.

Also glue might gum up the wheel.

I had some tar-like substance under the paint and it took a long time to eat through that. The wheel would melt it and spread it around. I ended up using a lot of chemical/gel strippers to remove that tar.