Bailey, Are you still considering this, I am currently considering this strategy myself...and would love to discuss with you!

HOWEVER, your upfront fees will be hefty thanks to the loan level price adjustments (LLPA) on a 90% second home.

-Check Upfront Fees: Find out if there are any upfront fees with the loan.

It appears logical not to sell the primary residence once it's fully paid off, considering the associated taxes and fees.

They don't charge application fees or security deposits, don't do background checks - they take ANY S8 tenant no matter how bad they are:(You really want Class C and B-minus areas for solid S8 tenants.Let us know what else we can assist you with.

Similar to an index fund, you can get 90% of the value simply by picking one firm with fair fees and sticking with it, rather than going to "managed" world.

Many of the tax professionals on this forum are not "cheap" but can make a good fee for fixing situations where investors relied on poor advice from cheap advisors.My conclusion is to interview a few and go with a professional that you feel comfortable with no only their fee, but also their personality, their experience, their reputation, and their willingness to not only advise you as you start your journey but provide education and planning for what type of investor you want to be. 

I have come across a property that an owner approached me about purchasing off market with no agents because they do not want to pay the realtor fees. 

You save loan fees.

Happy to connect if you need to discuss.