Looking to start a cashflow portfolio with multi-tenant properties.Please feel free to suggest other places too.

Feel free to share what’s most important to you and any other factors that influence your decision-making process.

Local real estate investment groups or meetups can be a good resource for recommendations.If you need specific lender referrals or have any other questions, feel free to PM me.

If you haven't tried this yet I'd recommend playing around with some of the BiggerPockets calculators here https://www.biggerpockets.com/investment-calculators If you have a pro account you can use the calculators as much as you'd like, if you have a free account you do get a few free uses of the calculators!

Feel free to PM me if I can help.

Can't you perform better buying 50 units in a market that perhaps has a higher cost of entry but due to better fundamentals experiences significant appreciation?   

Just understand that most wholesalers are inexperienced when it comes to rehab costs.  

To me the quadplex would be dual purpose, while you are not living there it serves as a reliable stream of income, once you move there, you could live in 1 of the units while you build your permanent home, and you could also use it for when your family comes over for large gatherings.A 2nd option might be to build an RV park, Unless their are zoning restrictions, you should be able to build one fairly inexpensive, with a septic system and either public water or a well, you can keep your costs to a minimum by doing gravel roads, which are easier to remove later if you don't want them. 

Overall they WERE problem free tenants until yesterday when we received a letter from an attorney stating one of the three brothers has been arrested for possession of child pornography. 

Also recognize that construction costs will be 2-3x more expensive in this area than they were in Pittsburgh so be careful and make sure to understand pricing before going into a rehab.