I'm in a state that doesn't recognize serial LLCs.When a property is purchased, it will be put into its own LLC with its own EIN and bank account.

First you need to recognize who are the types of motivated sellers:  “I have a terminal illness.”

Your experience with student loan repayment plans is out of date, the options have expanded greatly in the past few years http://www.ibrinfo.org/what.vp.html#IBR and even Freddie Mac & Fannie Mae recognize this http://www.fanniemae.com/portal/media/financial-ne...It's cool to figure out your criteria and I'm glad your screening tenants, but you are making too many assumptions and frankly you are using facts that are not relevant and your assumptions are far from sound.  

As you add more properties your experience will assist you a lot in knowing how tight you can squeeze a projected budget and how to recognize when a seller has left items out of the budgets they initially provide you.  

I've read in various places they'll recognize up to 75% of the income, and this is based on experience as well.. 

If you sell it upfront in a fully taxable transaction the gain recognized should constitute taxable income to you in the year of sale.

With a series LLC, each individual series can obtain an EIN and elect to check the box separately for taxation purposes even though the state of formation may not recognize them as separate entities from the parent.With all those factors assumed true, I have been contemplating the below (complex) structure:In the future, I may convert the operations entity into a standalone LLC for insulation / asset protection, but for the time being, let's examine it as an individual series off of the parent LLC.  

The tax code does not let you recognize a loss of the sale of your primary residence, whereas, you are allowed to claim a capital loss on the sale of an investment property.  

I'm not your lawyer and this is not legal advice, etc.IF YOU STAY IN WASHINGTON, WATCH OUT, BRO.A 2-second google search showed me that Washington state recognizes some sort of nonsense called committed intimate relationships, which means that if you and your girlfriend live together and split expenses, she may have a claim on all your property, even if it is 100% owned by you and even if you do not hold yourselves out as being married.To avoid this, you will need to enter into a cohabitation agreement with your girlfriend, clearly setting out what is yours and what is hers (for example, all real estate now owned or later acquired). 

In addition, you may need a Belize entity or a USA LLC as Belize does not recognize an IRA as an entity to purchase land.