That said, it's really not sustainable for future deals if you don't have the capital to continue.

I'm buying and holding for my future retirement so any purchases now I want to get as much cash flow in an area that will sustain.

You will need to connect with a CPA slash experienced investor slash 4plex househacker like Allec Logan, he recently purchased and househacked a few months ago in Santa Clarita, he also has a free excel in the fileplace to help you make quick decisions if the house qualifies for FHA self-sustained (not sure if that's the right term), should you choose that route.

By that time I hope to have purchased enough properties to sustain myself  while building my company and also keep taking my Real Estate business further. 

I am not sure trying to find a comparable CAP rate when a significant part of the building will not be sustainably leased will give you an accurate picture.  

The thing I'm struggling with the most right now is if real estate investing is something sustainable while moving around the country every few years.  

You can use credit cards, but that strategy may not be sustainable.

This does not suggest any sort of recovery in the economy, and frankly, it suggests that house prices are being propped up with investor money, that is bidding higher and higher.I cannot believe for a moment that this is sustainable, especially since most of these investors are leveraged up to their eyeballs in debt, and if the market rate for rent goes down, there will be some extremely sore investors out there.However, it is nice to know that when the market corrects again, our strategy of building a war chest for failed investment properties will make us a good return in the future as it did last time round.

As a first time flipper investor I suggest not to purchase rental single family houses untill you have in a savings account, designated for investing, at least the amount that will sustain you for one year.

My main real estate goal is to turn this one house into a cash flowing asset asap that is held in a trust for my soon to be born child which I will manage into a real estate empire that creates long term sustainable wealth for my family, business, friends, and community.