Any suggestions would be greatly appreciated.

Since it seems like you are not quite in the area yet I would suggest following the Pittsburgh forum and setting up keywords for areas you are interested in.

Try to find a realtor who invests in real estate as well or at the very least works with other investors.Hopefully our fellow BP members can chime in and throw in some suggestions that I may have left out.Best of luck to you!

He suggested a contract for deed.

Hello, I am actively looking for a Large Multi Family Apartment complex either in Tennessee or North or South Carolina.I am open to other areas as well, but these are my preferred areas, the property I want must have the following capability,Room for instant/forced equityRoom for growth of opportunity, i.e. under rented, neglected or room for further expansionPreferably B or C+ propertiesI am not affraid of work, and in fact are one of those crazy people who likes a challenge, so I hope the BP community keeps me in mind, I look forward to your thoughts and suggestions. 

He suggested 4 suites (shopping center/strip mall) which would cost $35 a sq ft (not sure if this price is good or bad) to build.

I made a post on Facebook, there was A LOT of pain, stress and lost weekends involved; 9 to 10 hour days, 6 to 8 hours on weekends (I could of studied more but I essentially maxed out my brain's capacity to make things stick).

Can you kindly suggest any reading material that have helped you understand deal analysis more.

I agree with the prior posts that 3 times is more than enough to repair the same screen and it is time for the tenant to be responsible.I suggest a letter to the tenant that amends the lease. 

I suggest you educate yourself like never before and learn everything you can about RE investing.