I will probably never go to the property physically.

After asking the realtor it turns out the tenant is on a verbal agreement with the current owner and has no physical lease agreement.

Im still in pain from all the physical labor I did to get it almost as clean as it was when they moved in.

I called Fannie and asked, they said that ADUs are only popular in HCOL areas and the guidelines for conventional loans incorporate ALL loans sold to Fannie/Freddie.

Many things are more expensive on investment properties because the owner isn't physically there and things can go unnoticed or not be dealt with as fast as the tenants aren't responsible for the property. 

At this time you can also offer Early Termination, Cash-for-Keys, or whatever other incentive you want for them to move out.3) Right before you send the eviction notice to an attorney to get a court date, another polite call and possible offer.4) Once you receive notice of court date, another polite call and possible offer.5) RIght after court date, another polite call and possible offer.6) Right before you send bailiffs to physically remove them, another polite call and possible offer.If you're counting that's maybe 5-6 phone calls (or emails or texts if that is what they respond to).

Or a data center where online information is physically stored?  

The husband has exposure to many physical security issues and lived in big cities with bad rep, he is very protective of his family and a little territorial tbh.

I worked in Corporate America with a steady paycheck for 15 years before I started investing in real estate full time.

@Nicole HarringtonI would outline the points you want the agreement to incorporate and then speak to your attorney to have them draft it.