Sure you may get some business from it but operating off of fear and not allowing other professionals to come doesn't make it look like you are coming from a place of giving. 

Unless you insulate EVERYTHING and put in good electrical heaters and have a professional do the work then think twice about it.

I am currently an IT professional and have been for roughly 8 years after leaving the USCG (Avionics Electrical Technician).

I have a 12 unit building in a small town filled with great tenants who are older and never entered the 21 st century, They deposit rent checks in a lock box in the laundry room and once a month my wife empties the box and drains a huge pile of quarters out of the coin laundry machines.

You don't have to replace the drain lines. 

(Technically I signed gave to the agent but agent haven’t mail out to him yet)He emailed me his renter insurance and he paid one month broker fee to the agent.Now before he move in he want whole place to be professionally cleaned and whole place to be paint.which is fine with me.Now he want a new ac, and new light bulb shelf inside the closet to be removed ( I dislike those requests ) and He has a mother who is little difficult.

Great input from a working professional!

Rather than starting with Google, start with NARPM.org then you know you are getting a professional.

Duplexes, see #3, keep and rent or Sell.What professional do we start with, builders or developers?  

He's highly professional, reliable and overall a great guy to work with.