This "master plan" is basically starting and developing a portfolio of rental units. 

My first goal is to build a portfolio that cash flows  7k a month in five years. 

I also am looking to increase my portfolio moving forward in life so I'm wondering if this would hinder my ability to do this, but it seems like refinancing and having both these properties paid off by the time I'm 43 or so would be pretty great!

I never thought that I would ever begin to start my rental portfolio but it's looking like its beginning to come into my life!

It’s part of a larger portfolio.

Looking forward to 2019 to really expand my rental knowledge and with buy and hold portfolio.

I’m hoping to build a buy and hold portfolio in the area.  

I want to build a portfolio using BRRRR for out of state properties to start.

Then you could also choose to use on Traditional LLC as an operating company, to separate the liability of your operations (contractors, property management, etc.) from your assets.For which entity, whether Series LLC or C-Corp, will fit your portfolio best, you need to talk to your CPA.Some generalized comments on the topic, though.

An exception to this would be if you buy in bulk or a portfolio of homes at one time.