That said, I have a nice stream of passive income (including math freelance jobs to keep me busy), and a lot of time on my hands, as well as experience with materials and vendors doing home renovations.

Ironically its the investors in the layered LLC's who believe they are hidden in the cloaks of secrecy and better protected who end up in  the most costly and drawn out litigation while giving the plaintiff attorneys reason to take a more thorough look under the hood.Keep your LLC ownership simple, carry appropriate insurance, make sure ever vendor you work with carries appropriate insurance and those who perform work functions most likely to lead to liability exposure list you ad additional insured (not merely certificate holder) and it should go without saying, avoid negligent conduct.

OpenPhone has been a great tool for communicating with property owners, vendors, and generic main office phone calls. 

The market is a bit trickier because you need to be a good host to the residents while being a good vendor to the paying client.

Also, the owner expressed concerns over the capital gains tax early in the discussion...so I am thinking the opportunity to do vendor financing will help me get a good purchase price and help the vendor with taxes.  

I have a few vendors that I paid over $600 for services that were independent contractors and wanted to know the process for taxes.

I just submitted plans to the city and now I'm looking for contractors/vendors. 

I have met Bosch I was a back end vendor at Rich dad when he spoke there..

Otherwise, if you're assuming third party management, then maintenance is either baked into their fee or charged hourly like a vendor. 

At my day job (non-RE), we have a recurring vendor that charges us about $150K/month.