There are plenty of websites that can give you a good idea of property values in your area.

$10K seems like a nice, round number...Finally, if you have $250K in cash, I would not put it all into a single property / single dealHope this helps... happy to help further

Managing tenants is probably the most frustrating task of all the task associated with owning rental property.  

I would take out a private loan on the paid off property to get the other one squared away

Since the yard is already rough, I would keep the shed and see how it works out.Consider adding something to the lease that permits you to remove it from the property if it becomes problematic.

With the property being so old it came with a lot of weird ways of doing things which took a lot of creativity.

The 1031 must be a sale of investment property followed by the purchase of investment property. 

I own two properties here in Texas.

Do you have one already established for your other properties?

We have a different spreadsheet for each property.