Toilet is going out too. Leaving it until the plug I ordered comes in for both the shutoff valve (really old) and the drain. I have a new Toto Drake to install in it's place once the tile work is done.

Crazy thing is there was no vented bath fan, only a ventless fan. The builder stupidly ran the main HVAC plenum in a way that blocks outside access from this bathroom, but I found an alternate route out and am retrofitting a new fan.

Ventless fan is useless for anything except muffling noises.

If the regular thinset will bond to the glue (likely white mastic) without fail, I will go this route if I can get the floor scraped up some more w the blade on a pole. Thanks!

Will be removing them. Already removed the old bull nose trim. Just doing this in phases.

Unfortunately no window - interior room. Attached office has a window and nothing in it currently, so I will open that. Thanks!

EDIT: HD locally does not have any of these machines. Most HD's within 100mi show a stock of 0, but there is a single unit at a HD 35mi away. Are these normally hard to rent?

https://imgur.com/a/N47pzSO Photo of the glue, and overall room.