I am not an expert on lagoon systems, but i would not consider anything else till i am sure that this lagoon will not kill my park and me financially. 

In 2008 some how the second loan was sold off to a company called "Beneficial Financial."

I don't want to spend the money to individually meter the units, it doesn't make sense financially. 

I would recommend to work your sphere of influence first.

We knew that you had to ensure separate financial records, bank accounts and shouldn't purchase items for the rental properties from our personal accounts.

I'm also a first-time investor.After spending a few years saving and studying, I determined that investment properties were my best option for financial freedom.

Thankfully, I have not overpaid for a property :) I am using the BP calculators to evaluate the deals financially.I have financial backing and so I'm looking to partner-up with contractors and/or partners who have done big rehabs on small multifamily properties (2-5 units).

In the neighborhood of 100 a month which I doubt there would even be 50+ properties that I would need to be financially free.

Also, I haven't run financials yet but it would likely be higher than this

That is, it can probably do what you are wanting to do, but if in the future you run into financial problems, you lose both properties.