But to get the best rates, you would want to do an initial construction loan (typically 12 month interest only) and then refinance into a investor residential loan (think like typical 1-4 unit mortgage product).  

Context: I purchased a 2 family unit several years ago.

If you wanted another option and do not need the quick cash you can always build the unit rent it for a year and then sell the property.

I've heard anything over 4 units is commercial but you can still get residential loans on 8 unit or less properties. 

If it costs you $160k to get this unit built/installed (I'm just averaging) then you're 10 years out on breaking even.

You are the Property Manager.Your analysis has 2 units that total out to $1800.

Even armed with 7 years of experience and over 100 units owner or managed over that time, I still see value in and pay for pricing software. 

Others may disagree, but in my opinion, you need to have some level of rehab knowledge and understanding of costs before having a contractor walk a property.

The line of credit and loan opportunities are not that good in my opinion.I have CapitalOne for my personal account and I am thinking to move there as their tech has evolve and it is at a good level with very low cost, though I haven't evaluated what are the benefits for LLCs, they have all the offerings as a bank because they are one (Mercury is not a bank, it is a tech enabling company).

I Would continue to include any tests you’ve done, since you’ve said they were satisfactory…it just adds a level of assurance to a buyer.