(I could only handle 20 minutes of the emotional pull they were going for vs business realities of REI).  

As such, you're able to keep your emotions out of the process.

Regarding possible eviction, you need to consult with an experienced eviction attorney now to prepare.A word of advice:  Take the emotion out of it. 

I did and started buying my first few stocks, learned a very valuable lesson about NEVER panic selling and acting on emotion, and eventually realizing that it was more fitting for my strategy to simply open a Roth IRA with them and essentially dollar cost average contributions into several index funds to fill it up every year.I continued to keep digging, and eventually found real estate.

should a young couple coming to a new rental, get back their first month rent, because they ahvent been able to enjoy peace of settling into the apartment they organised from months befre becqause it has a severe coachroach infestationi'm unsure why it wasnt treated befre they were due to move in or as soon as they arrived.its now 3 weeks laterthey have had to move around couch surfbe in temporary housingthis has impacted them enormuslyshock distresseggs in their clothing that need all to be washedthey couldnt settle immediately before starting demanding new jobs their ability to start their new jobs to studyand to sit examsmoving state and starting new jobs is hard enough exhausting enough without coming to a cochroach infested apartment and moving around until the prperty manager has it treated.should they get back their first months rent as they havent been able to be settled in the housing that they had organised from months beforeand the stress and damage and loss of income has been enormous.

Interest rates are temporary, you can always refi.

We may have had people speed up their timetable for buying a home when rates were so low thus inflating current buyers at the expense of future buyers but this will be temporary.

When it rains, these washes fill with water and become temporary rivers that can degrade roads.

seller to  pay  for  a  temporary  rate  buydown  so your mortgage rate  can be  lowered for 1st 2 yrs  ...etc ) 

You're already considering keeping him at $100 - $200 below market, which demonstrates you are operating on emotions and not with a business mindset.