For example, there is a detailed Montgomery County plan to put in a additional rail line to King of Prussia by 2023.  

Hello all, I already posted a detail analysis using the rental calculator.

That was a detailed response and very clear.

There are several different ways to go about this and a ton of great posts, member blogs, BP blogs, BP podcast, books which cover this topic in great detail so I will just provide you a few terms to search and you will find all the information you could ever want right here on BP.1)  Wholesaler - You are right if you could find a great wholesaler this could provide you a steady stream of properties which could be a good input into a fix/flip model.2)  Motivated Sellers -  If you want to dive in you can start looking for the motivated sellers yourself but this is not a easy endeavor.  

I will check these details before buying.

Would you choose to buy one or two houses outright have no mortgage, or use that $50k to buy 4 or 5 houses with mortgages.I know I'm not giving a ton a details, and I'm not adding in closing costs and commissions and all that...

Can you provide some more details about the deal and the money you have/need?

You'll find a good overview of the coming rezone details at http://www.biggerpockets.com/files/user/ChrisNewma...

No doubt someone more details will be along to offer advice. 

It depends on details not given...