What I would suggest is that you refer to the following document as it was recently issued just this year and can be very helpful guidance in circumstances where you have a question about how to respond to tenant requests for service animals and/or emotional support animals:Updated HUD Guidance: Assessing a Person’s Request to Have an Animal as a Reasonable Accommodation Under the Fair Housing Act

Meaning, double check your numbers on the anticipated rents you plan to charge, with multiple sources, and try to anticipate any costly, unforeseen problems during the renovation.I’m currently renovating a 4br 2bth into a 4br 2.5 bth, adding a master suite and opening the kitchen to the dining room and living area.

I would also argue significantly less risk.It's not the investment vehicle for everyone, given life circumstances, but something to consider!

If you can live in one unit for close to (12) months you can use the "Change in life circumstance". 

However, it only applies under certain circumstances and even then ONLY if the tenant submits a signed declaration to you under penalty of perjury (which I'm guessing they haven't done since it doesn't sound like they even know about it). 

As always, consult your own tax professional for specific advice related to your own unique set of circumstances.

I passed the prelicensing course and almost became a real estate agent 14 years ago but life circumstances and fear pushed me to choose security over freedom at that point. 

Even experienced GCs get surprised at something and have unforeseen challenges that crop up.Learn as much as you can about the market you are flipping in so you know what you need to do to that house in order to get top dollar. 

Good find, unfortunate circumstances 

I don’t know why you’re being advised to go through an eviction based on the circumstances you presented.You wouldn’t file an eviction against a tenant who has stated they’re moving out, and then voluntarily moved out and returned the keys as agreed.An eviction (unlawful detainer action) is only done to recover possession of a property that someone is refusing to voluntarily return to you.If you still need to recover money from them after they’re out, then you typically go through small claims.