This gives you more of a safety net and more purchasing power.You can probably cover housing costs, but have you figured out how much you need to live on and what capital it will take to get there?  

I am new to BP so please be patient with me lol.  

Music programs & assemblies to prepare for, huge kitchen & bath remodels homeowners are waiting on, patients waiting on hold for their PT appts...  

Negotiating patients dispersents to contractors and doing any of work your capable of yourself.I was in your shoes almost a year ago and have started the process of refinancing out of fha so when my year of being an owner occupant is fulfilled I can rent it out and repeat the process of another low down payment primary residence .

Ben Graham's book - "The Intelligent Investor" - advocates buying with a margin of safety.

We had to move out for safety reason and also to find a better school district.

I know this violates safety codes and such, but how can I enforce this? 

Be patient.

So please be patient this is my first post if I am not clear let me know and I will try to explain better what I am asking.It was suggested to us that we do a % rate for our assignment fees to keep everything fair and have a set method of setting fees.

Just be careful to plan it correctly.Based on your figures you'd have to come in with a substantial amount of cash to pay down your loan to 75% of appraisal in order to "take out," or refinance out of the FHA loan.One solution beyond having a grip of cash is to buy the fourplex considerably under-market but the likelihood of that is two fold because you have to abide by the "health and safety," standards of FHA financing which can be daunting at times when looking at REO's, auction sales, and etc.Best of Luck,