I'm thinking of gradually putting and renting 5 new single wides on the land then renting them out.

I do not believe you can beat the price to rent ratio.Couple of my experiences: (I only buy on land and not in parks.)Only rent double wides.  

This area is right next to the the gorgeous nation wide children's hospital.  

@Ryan Hutchins I would suggest working with an investors agent (preferably someone who works at a brokerage that focus on investment properties and avoid ones that are just residential agent, because the amount of up-to-date/freshest information and the wide range of network/connection necessary for not just finding the best deals but also helping you with the exit strategy, tax saving strategies, etc really changes the entire outcome of your investments) who has great in-depth market knowledge, experience in making successful investments themselves, holds high level of integrity, honesty and loyalty.

That's a pretty wide brush your research spit out. 

I'll have to double check if PA has any state-wide law that forbids you from stating in your advertisements that you do not accept Section 8 Tenants.

We set a goal to "go wide" by buying a number of properties while on active duty, and then we intend to "go deep," by paying them off. 

If it's in great condition, and can sell for top dollar, be the realtor.A lot of people focus on one strategy and don't realize that when you're doing direct mail or marketing, you can arm yourself with a wide variety of tools and it not only helps you, but helps the seller.

We are in a sellers market nation wide, that means the seller is in control and not you the buyer.

Composite is hotter to the touch in the sun and requires more support - so if existing deck it does not make sense imo to change to composite as the spacing for support may be to wide and you can sister but its just not worth it imo.