I understand that it might be smart to have a good balance of cash in the SIDRA in preparation of something like this, but that cash sits un invested. 

In our area, a property like this could either go in 2 days or sit on the market forever depending on location, comps, and local market. 

I would sit tight.

You will have a difficult time selling the park with the house attached down the road even after you fill it up and improve the CAP.And a second word of caution since I am sitting here spewing advice... those two vacant TOH homes depending on condition and the 6 vacant spaces should have zero value in establishing the park's value. 

real estate is the same you have to work under a broker ( master) for 2 to 3 years before you can sit for the Brokers test and then work for yourself.. 

I would use the cash first, no sense in paying 8%+ and have cash sitting doing nothing/near nothing.Good luck!

A nice touch is to provide some nice metal shower curtain hanging rings already installed on the rod and a nice translucent milky colored shower curtain that fits, brand new sitting on top of the toilet tank waiting for them when they move in- so they can take a shower and not have water go all over the floor for the first few days.

It seems like I need to be sitting in at least $40k to get started as a new investor or partner up with an investor who has the money to bring. 

Personally I am not a fan of sitting on a lot of POH homes for sale at the same time. 

That's the bigger question you guys need to answer providing you sitting on valuable equity or have the means to make the property function as a LTR.