The more you know ahead of time, the easier the process will be.

Obtaining the FHA loan is great and you could repeat the process after about a year with the right lender.  

If you need to obtain it, how difficult will that process be?  

Top 3 reasons owners hire PMCs:1) No time to manage correctly2) No time to learn how to manage correcly: laws, documents, processes, etc.3) They're too nice and need someone to "save them from themselves"A good PMC can usually earn their fees by better managing the property/tenant than the owner, thereby:1) Increasing owners net profit2) Decreasing owner's time commitment, stress, headaches, etc.No matter what though, you should always plan to commit a couple of hours a month to manage your PMC.

Quote from @Sami Gren: I start by making the original tenant fill out a form requesting to add a new renter, and they pay me a $50 processing fee (I charge a $50 fee any time I make changes to an existing lease). 

And or cannot get horizontal financing like I can which is a huge advantage value of your lots go up at each milestone..

Any special process or just fell them and skid them to a landing deck them then haul them off ? 

In a city like Philly, you will face many challenges - you need to learn the market and know the neighborhood and the block and make sure all of your numbers are within reason, you need very reliable contractors, you need a to understand the permit process, you need to be familiar with market expectations. 

The process and management will take you 1-5 youtube videos to learn about. 

I like the thought process.