There's a nice chapter in The One Thing that talks about willpower being a muscle and it fatiguing over the course of a day.

It works a lot of muscles that don't tend to be used, especially when doing the ceiling.

The hourly rate can lead to micromanagement and tension.

Taking action is a muscle.

All my leases specifically state no smoking allowed inside premises, you can add this to lease when it’s up but I’m sure it will bring some tensions if you want to keep him.

I am by no means an expert on this, but given the fact that there may be some tension between the two of them during the divorce, if they are both on title for the house, I would make sure your documentation includes signatures from both parties.

This seems to be the primary issue with the neighbor and would hopefully would resolve the tensions. 

I was going to add into the agreement that I will provide these heating and AC units for the basement tenants but they need to make sure they call the PM for any issues.Property has a 2 car garage but I don't want to split it between tenants as this could cause tension.

You will find all of this easier if you have explored the neighborhoods, you have muscle memory enough to spot a deal when you see it, and you have made some connections with great lenders, contractors, etc. to aid your clients before, during, and after transactions. 

For example, having a house chore chart that is built into the lease so it minimizes tension for dirty dishes, cleaning, ect. especially with 4-6+ separate leases under one house.To answer your question about targeting this group, I'd say put yourself in the shoes of a 20-mid 30 year old younger millennial professional.