If I was in a cheap market say we’re a valuation on a property varies only by $25k from Poor condition to fully rehabbed, you could not obtain the same profits from the value adds. 

When wife hired a contractor, she spent considerable time researching and contacting contractors, obtaining price quotes and supervising repairs.

In the formation document, it said the next step is to obtain business license.

Everything I have built has been sold or rented before I had the certificate of occupancy. 

I have about 70k cash (not including reserves for properties), and probably about 120-140k in obtainable equity in the current buildings.

You may want to adjust your number to 10 properties in 11 years (+plus) as your best case scenario if you plan on buying with Owner Occupant (OO) financing to obtain the lower rate, you will find yourself going past the required 12 month OO window so 10 properties in 10 years isn't possible.

But you're a young man and can establish yourself however you want, so you should decide what it looks like and do your best to obtain the goal(s) you set.

Aside from min sf of lot, are there any other roadblocks that would stop me from obtaining the variance.

I would only go with someone licensed, insured, and only after obtaining a report from a licensed structural engineer.  

The only thing aside from the certificate of good standing, formation and Operating Agreement, would be a Corporate resolution between members granting Authority to sign in case either one can’t sign for whatever reason.