What would be some concerns and benefits to purchasing such a park? 

@Dave Nixon Interesting you picked up on this...small town churches are dropping like flies...I manage large capital improvement projects on institutions...just keep in mind that you'll be working with a lot of different entities, including an architect/designer, engineer, industrial compliance...likely other entities from the government and/or municipality...lots of moving parts.You should be aware of Asbestos abatement and concerns like underground storage tanks...which are very common in all these buildings you are referencing...design and abatement fees may run hundreds of thousands of dollars before the project even starts...Not saying you can't pull it off, just be aware...good luck! 

The tax implications are obviously a huge concern if I were to sell.

If you have concerns about the terms of the addendum I recommend contacting a real estate attorney in your locality.

To take this example to the extreme, imagine that one person took out the mortgage but 20 people were on title.

I have an extremely interesting situation in front of me.

Especially if people are asking for proof of funds.I think I am most concerned about finding a deal and getting it under contract and then that time in between obtaining the contract and finding a motivated buyer.Nate

I've noticed that in some smaller counties, there doesn't seem to be much investor activity so it's more reasonable that you can find good deals but $150k strikes me as extreme.

We've had some maintenance concerns, but overall things have gone well, this year!

On the extreme other end of the spectrum (in the no value category) are these wholesale seminar “gurus”.