Where the challenge gauntlet is laid down, next level agents pick it up.I read this and my first thought it "the weak agents will leave." 

I agree that one apartment building seem too weak to require 750 hours' work.

But again some mistake in the situs, operating agreement or day to day use can render them very weak. 

@John Smith, 1031, death, a charitable remainder trust, possibly a 721 upreit (although that only acts like a 1031 and defers temporarily),  and possibly a sale and a purchase in the same year where you cost segregate the purchase and take whatever bonus depreciation is available (again though a weak substitute for the 1031 exchange).  

That being said, there are many potential points of weakness.

So often when a seller won't go FHA, they are more concerned about the inspections than weak credit buyers. 

I have experience with doing apppraisals and knowing how to properly value a property but I'll be the 1st to admit rehab cost may be a weakness so I just over estimate the repairs.

Most, if not all the cracks are at weak points (by windows or wall corners). 

Wholesaling is very hard and not for weak minded people, it looks like you have a lot of determination.

To @Michael Baum ‘s point- I think he’s right about STR demand being weak in that area.