If our main goal together is to acquire as many properties as possible as fast as possible - it feels like this leaves us with a smaller tax return, thus less capital to use to reinvest into new properties. 

the success or failure of every single step of every single project is on you.I've mainly been targeting off market properties through wholesalers.

Since you're an individual, mainly whether or not the 4plex was built in the last 15 years.Assuming the tenants have occupied their units for over a year you'll want to give a 60 day notice.Alternative route?

I would recommend to all that they build a STRONG relationship with a Realtor/Broker or several Realtors, because  2.Downloaded a list of multi family owners from Listsource.com - You can get this from a Broker who can run a list of non-owner occupied properties, this features the number of beds and baths and from which you can build a mailer and network. 3.

The main monthly meeting is this Tuesday (Nov 12).

Remember standards are changing constantly, and just because that subdivision has this construction feature in it, doesn't mean you can too (doesn't mean you cant either).

I have heard alot of success stories where Bigger Pockets  was one of their main resources in achieving those Goals. 

Now private lenders are my main purchase method, along with seller financing and BRRRR.

Only 1 was found through the MLS, but more recently that has become my main option.

I just bought a Lake House in Maine this past summer.