Hello all,I just closed on my primary residence with an FHA loan so I am not able to house hack since I am obligated to live in the residence for a year.

I buy homes as a primary residence with 5% down and move into them keeping my previous as a rental and the area that I live doesn't have new builds that would work for us, otherwise I would buy a new build. 

Federal ProtectionsFederal protections against predatory lending begin with a veritable alphabet soup of legislation, including TILA, HOEPA and RESPA.13. https://www.lexology.com/library/detail.aspx?

The main reason I ask is because that is significantly below primary residence mortgage rates let alone any investment loans, if you can get rates like that I might need to make some changes on my end hahahTo answer your original question, assuming all else is equal long-term fixed rate debt is valuable. 

But you cannot exchange from an investment property into your primary residence. 

It can be done ethically, but you need safeguards to confirm mortgage & possibly property tax payments made on-time, as well as insurance with you protected.- Also, you need a legal way to take back the deed if buyer defaults!

I have never purchased an investment property before (although I do own my primary residence), let alone done a seller financing deal.

Having a mortgage and your normal STR insurance is already 2 levels of protection. 

The parent must file a gift tax return annually, and any remaining balance is included in the estate.If the home was your primary residence for at least 2 of the last 5 years, you may exclude up to $250,000 ($500,000 if married filing jointly) of capital gains from taxes.

Investment Info:Single-family residence buy & hold investment.