We have a working powder room!
I decided to try out using a bunch of slim cut-offs as the vanity toekick. It took a few glue ups and some creating clamping but the end result worked out and noone will ever notice it.
Attaching the sink, faucet, and the rest of the common hardware was completed without any issue.
The vanity door and drawer are in the works as I ran out of cherry and now have to purchase more.