Recently appraised for 240k, I was able to negotiate to 215k with 30k rehab budget (more on cosmetic issues) .

Assuming you are managing the property well and taking care of maintenance issues, there really is no benefit to either you or your resident from the inspection.  

Especially if you live outside the major city, then the price points should be more affordable.

I like my landlord just fine and there are zero issues on either side concerning payments, repairs, upkeep/cleaning, or anything else.

House hacking is how I personally got started with real estate investing and how I help the majority of my clients get their foot in the door.

We did not get a property under contract in the 90 days, however, we did submit offers in the first 90 days that were not accepted (mainly issues with price).

I know you've already solved the issue but going forward you simply list the other adult as an "authorized guest" of one of the individuals financially responsible for the lease.

If it opens in 2025 the vast majority will probably start to move/migrate within the first 3-6 months of 2025. 

Is it worth diving into a full bathroom/kitchen gut (unpermitted/handyman not of my choice) possibly revealing more issues or just paint, new cabinet pulls, switches/outlets, lights, etc?

The real issue for buyers looking for LTR, cash flow even with a good deal is hard to pencil out to be in the green.