I would keep getting educated until you no longer need to ask others what they would do with your cash.Then do what you're good at and have confidence and fulfillment doing.All the best

What percentage of signed leases fulfill their full term?

I will live there to fulfill the residency requirements and then utilize the property as a STR in an area very friendly to investors with great regulations already in place.The property is zoned as a duplex but has been opened up for years as a single-family and frankly will never make sense as a duplex. 

With your example of staying there 1 night out of 6 months, whereever you are spending the other 6 months of the year is your primary residence.No, I mean if I spend 6 months and 1 night out of the full year at the fha residence, does that count as fulfilling the loan obligations? 

No choices, just get out.If this is all true, then your tenant is making it impossible for you, as a landlord, to fulfill your obligation of keeping the home in liveable condition.

I have lately been feeling less than fulfilled at my job/s for the last few years.

The strange thing is; most of the rich people I've ever met who have far more than enough money to fulfill those dreams never do because there is this strange phenomena where most of the people who become rich do so because they are hard-working people and the second phenomena is that the people who work harder and who earn high incomes constantly have more business tasks on their plate.

Typically a partner is brought on to fulfill a role that cannot easily be hired out.  

Would it provide a fulfilling living experience?

No issue, you're fine, you fulfilled your owner occupancy promise and didn't commit fraud.