A few questions...1) Obviously, theres a few more details that go into this scenario...BUT, at surface level, are there any foreseeable issues that I'm not thinking about?

Storm sewer system to storm pond or surface drain approved?

The floor was solid surface, so it could be cleaned. 

No Drywall or wood that can mold no Carpet only hard solid surfaces. rated for 90% of Noth America with an emergency ADU permit from Ipermits USA to add your existing single-family properties when you wish to generate extra rent.

Wholesaling is a tough gig, but on the surface it looks super lucrative with little up front capital needed to get started. 

I’ve been looking at properties and trying to analyze them via calculators for flip, BRRR and rentals like crazy but they never come out as making a profit even though on the surface some look really good, others look like seller is too greedy.

Mostly surface cosmetic updates such as new trim, paint, and minor exterior cleaning/fixes.

Pouring a concrete patio or installing pavers makes the ideal surface so the tenant can put out some seating, etc.

Scope of work, ie: surface should be totally smooth, paint quality?

South Side Carpet Cleaning does a good job.I almost always just replace with hard surface flooring though.