I am in discussions to seller finance a townhome-style quadplex.

I'd recommend interviewing multiple PM's and seeing which one fits your style and expectations.

The goal of the first 3 deals will be to target 1-4unit styled homes, requiring minor-rehab.

I think it really depends the style and setup.

You'll likely find it easy to find people who will tell you what you want to hear, but you really need hard facts not speculation.But for some speculation, if you're talking about the Nantahala River or Little Tennessee, sure I think you might be able to do $22K/yr, but not much more, unless perhaps the places are uniquely styled. 

Location. 25 minutes to beach, 40 minutes to Florence, 15 minutes to Pisa, 60 miles to snow skiing.  10 minutes to Home Depot style store, etc.  

They could have particular styles or things that they specialize in and wholesale the rest. 

My first MF I represented the buyer on I made 100k. for maybe a weeks worth of work. 3. if your going to be looking a more resi style duplex 4 plex a lot of those get listed and having access to the MLS is far superior to any other on line listing service ONE simply because you will be able to talk to the actual LIsting agent not someone paying for leads.And then of course having access to MLS lock box's and not relying on agents.. this is huge.Now if your maybe going to buy one property sometime in the future and you have no interest in learning the RE laws of your state or making any money with transactional real estate then sure.. its a pass.. although I would still recommend the pre license course so you learn the basics  the vocabulary and states unique laws.. knowledge is power in RE.

Once you have enough properties to support your life style, what is the point of acquiring more?

I just finished my first old Victorian style home flip.