On a new install I use 1/4 plywood glued to the granite to help support the exposed weaker areas.

Its kind of hard to tell from your pic exactly what you are doing.Have considered just putting in a wall mounted sink or a small pedalstel sink.

Really inexpensive and can mount them in trees or along the roof edge.

The counter top could be glued down as well as screwed.

Are there pros and cons to gluing down vs floating the floor?

Hey DonaldThis is from an experienced carpenter the base looks good from the photo pop off the countertop and replace it with a sheet of 3/4" plywood cut two drain holes for the drain of your new sink bowls countertop flush mount cover countertop with tile $100-150 for sink bowls & plumbing hardware@menards $75 for wood, tile and grout.

I'm looking to start a group for multi-family and small apt building investing for the Yonkers/Mount Vernon.

I know nothing of the area there but keep my eyes glued to the MLS in the Ferndale vicinity.

high spot or poorly glued vinyl or both.

Have you checked out Mount Pleasant in Vancouver?