Most new homes have 200-amp service, therefore you would probably want to upgrade that depending on your situation.

I just recently upgraded to pro (Woo!)

I have found out that they are selling to upgrade and need their down payment in cash for a new bigger and better place.

Extensive work was done to the building with foundation repairs, HVAC, kitchen upgrades, and re-doing bathrooms.

Tag me if you have any specific questions but here's some quick bullet points on the program:Other Important Items to Know about “Conventional” Renovation LoansMaximum – Minimum Purchase/Upgrade Amounts:Minimum: $5,000 (below this on an exception basis only)Maximum: Limited to 50% of the “after improved” valueOccupancy: Primary, Second Homes, Investment PropertiesRenovation Term: The renovation term for this program is a maximum of 180 days.The Borrower(s) is responsible for the work being completed within the escrow period.

If we assume each unit needs $4k in repairs/upgrades then you're looking for a HELOC of at least $12k - will that come from this property's equity or from your 2-door investment property?

There sounds like there is much work to make repairs and upgrading. 

I got my QB Pro Version 2011 for years now, but will have to upgrade soon as 2011 version doesn't work in Windows 10, and I'll be upgrading my computer.

Unless you have done serious upgrades to the property, the Closing Disclosure most likely would suffice for you to protest next year as well. 

I not only make an upgrade plan for the current tenant, but I also make a plan for the next vacancy which I assume will be around 10 years.