I think what you are suggesting is basically a house trade.

@Jesse Waters I am assumeing when you pledge part of your equity on a property they will be recording a lien on the property basicly a 2nd mortage?

Basically my point is, if you have a right to charge someone $40,000.00 more than what you paid for something or for providing a service for them, why would a guru be evil or scum for doing the same thing?

Learn the basics  of real estate and understand the basics of finance before you try seller financed deals........ yes, it takes an effort to learn.

Before getting creative ideas, need to understand the basics and the rules of the road.I'd also say you have two Realtors who must be idiots and see a larger commission check. :)

If you don't know what wholesaling is, here's a link:http://www.biggerpockets.com/renewsblog/2006/11/25/wholesaling-real-estate-basics/

If you will need a new roof, same calculation basically.

It sounds simple but I'm sure it isn't, basically it described the steps to take but not actual examples of forms to fill, where to get them, who to talk to, etc.  

They will motivate and push you to purchase 40k in classes - I don't recommend that - but sit in and learn some basic information.

I attached the link to the legal zoom page below its $160 which is basically the cost of a PO box, plus it is usually more convenient than traveling to a mailbox or PO box to check it all the time.