Given Covid related material and supply shortages, should I plan additional buffer time around my contractor's estimates. 

I got a very good price on the building (about $25k per door), but it was a ton of work as in addition to tenant issues, there was TONS of physical distress (foundation repairs, sewer line and water line repairs, electrical upgrades, new roof, and apartment renovations needed for all units). 

Additionally, are there any other methods, approaches or strategies you’d suggest for someone just starting out in this space?

In addition being able to do your own searchs and one thing out west here that was very productive for us/me was just going through the big Plat maps ( the actual mylar / paper ones in the day) We could find shadow plats.

In addition, a motion for default was filed against an outstanding mortgage for another $ 367k which was personally guaranteed as well.Keep watching the Kiyo v BTC and Dream CQ Holdings V BTC cases as both of these have a potential basis for piercing the corporate veil.  

And then, whatever the seller was planning to spend, I'd have them pay that amount to me as an cash allowance at closing.

Either way, i always decide to buy additional properties as opposed to developing what i have, because I’ll continue having that and can do what i please in the future. 

In addition, you will not be relying on the legislature to continue to protect safe unpermitted units.  

Additionally, I wholesale deals and we buy & hold in SE Wisconsin.

And their tax advantages go away when you decide to quit and spend the money.