So far I think the only thing I’ve paid was like a hundred bucks to my agents brokerage for some sort of service fee.

Commercial agents get cut out of deals waaaaay more than residential agents, so we need to know you're  not looking to be cheap, that you value our services and can commit to paying us.I'm not saying you haven't done all of this, but again you will be amazed at how many people want to use us to pay nothing to get everything.  

Meantime, thank you for your service.

I wanted to know if y’all know of anything good skip trace services that would get me the homeowners cell phone number and if so, what price I’ll would be looking at for the services?

My background is 7+ years in food service with a B.S. in hospitality management.

It does happen.You could use a servicing company with a wrap. 

A lot of people don't realize this is a service based industry, but one where some relative confrontation is part of the routine business.

@Dave Foster - good point@Justin Frye - my feedback is assuming the property would achieve my performance goals even with the new debt service created from of the refi

They have no excuse not to pay, because they can drop it off at the bank in person if they don't understand how to send it using their computer.Also, BiggerPockets has a list of online services here:https://www.biggerpockets.com/rei/pay-rent-online-payment-tools/

I'm expecting the HVAC/water heating to be a much more significant project, as there are a lot of questions I have that I cannot answer about whether I'd need to expand the gas service or electrical, whether I can run small-duct high-velocity in the ceiling easily or possibly along the ceiling inside the unit instead of in the walls, etc.If possible, we also would like to install in-unit washers/dryers in the first and second floor units.I don't know if any of the above would require expansion of the gas or electrical service to the building, or how I would go about setting that up.