However, if you feel more comfortable having someone handle all of the management so that you don't have to worry about anything, start with your network of family/friends and see if anyone would be willing to help you manage for a percent of your rental revenue.

This is where everyone makes a decision on what level of delegation they are comfortable with.

Is the two year full return just your own personal comfort level?  

I have looked at many houses in the Philadelphia area but many of the places I have gone to were no areas in which I am comfortable living in.

Can't do it without leaving my comfort zone!

To be comfortable I would need to feel secure this buyer will manage and maintain these 25 units well, especially since they will have little to no $ skin in.   

If you have any budget friendly contacts you feel comfortable recommending please let me know. 

Well, if you can get it for your target price after you have toured the property and feel comfortable with it- go for it!

This is if their are no other lions or mortgages on the property that you aren't comfortable assuming.

As far as the suburbs I don't know how comfortable i would be borrowing 200k+ for a decent single family home while still having some money left over for reserves.