I come from a background of buying dental offices, and if you don't have 3 years income to compare you cant' really tell how things are going for that particular office.

We don’t know any PMCs to recommend in the area mentioned, but since selecting the wrong PMC is usually more harmful than selecting a bad tenant, you might want to read our series about “How to Screen a PMC Better than a Tenant”:https://www.biggerpockets.com/member-blogs/3094/91877-how-to-screen-a-pmc-better-than-a-tenant-part-1-services-and-processesWe recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.

But if your goal is rapid expansion, keeping that extra cash to invest in more properties might be more beneficial for scaling.If you're able to grow at 3-4 SFH per year, putting the extra money into expanding your portfolio could generate higher returns overall compared to paying off the loans early.

I had someone message me about my debt fund and was like "not FDIC insured", no kidding - you are comparing apples and oranges and thus their is a risk premium for investing.

There’s likely a carrier that’s most aggressive in the city where your 4 unit is located and comparing your premium to that of similar properties  nearby will be the most accurate assessment and point you in the direction of the most aggressive carrier.

He compares that to cold calling, where he was getting better results.

Hi there,Considering a duplex as your primary home and renting out the other unit is a great idea, but you need to understand how interest rates work in this scenario.When you buy a duplex and plan to live in one unit, you can still qualify for a residential mortgage, which typically has better interest rates compared to commercial loans.

., with high appreciation, you can use cash-out refinancing to buy additional properties with minimal additional capital from your savings.Lasts throughout your lifetime: For your tenants to continue paying similar rent, they must remain employed at comparable wages.

Take for instance my B+ located quadraplex consisting of 2 Bedroom units in Philadelphia that rent for just shy of $3,000/m and compare my building to the nearly identical quadraplex building in a C location in Philadelphia were the rents are $1,200/m. 

I would do some research on comparable properties to figure out the best pricing.