I typically like to add value by doing about $7,500 each building, $15,000 (dependent on viewing this weekend).  

Only really need one deal some require more. 3.5% origination fee, 9 to 12 points also depends on credit.

does it depend on how much cash was used from the exchange?  

Real estate is market driven so everything just depends on what the market does. 

It will all depend on the type of investors you bring in, their investment goals, your group's investment goals, risk tolerance, and many other factors.

Depending on how you plan to allocate your overhead (for instance- if hours are you main cost driver), you may want to integrate with some other apps on the platform.You may want to speak to an accountant that has worked with implementing these types of systems (apps + job/project costing + class tracking) as they could help point you in the right direction. 

Will depend on several factors like the type of property, type of tenants, your risk tolerance, other assets you own, your estate planning, laws where the property is located, etc.An LLC is a good idea if you're worried about liability in that as @Christopher Phillips said, any lawsuits would be limited to the assets of the LLC and not your personal assets (assuming you run the LLC appropriately and the corporate veil is not pierced). 

I can also refer you to a few property managers and a contractor I did work with this year that did a great job for me, depending on the size of the project. 

@Tyler Weinrich Depends on his motivation for selling.

I wouldn't buy on purpose something that loses money.It all really depends on the totality of your purchase and financing.