You did not buy a mobile home park but rather some lots in a larger park, right?

In my many years of property management and personal investing, the clients who typically chase cash flow, will often have properties that do not appreciate all that well, and those properties tend to be less liquid. 

In fact, every time I've looked, it's very non-linear.Smaller homes routinely show a larger $/sf than larger. 

Before you start looking at tk...For those who are able to save more than $30k a year or have substantial liquidity (over 200k), being a landlord of even TK with a PM is not passive. 

If it's a larger organization, feel free to inquire about their staff qualifications.2.

My units are larger 3 and 4 bdrm townhomes, 1600-1800 sf each, intended to serve families.With a mid-range construction budget, what items are worth splurging on to get improved rents? 

For larger MF - Get to know as many commercial agents as you can - they have boots on the ground all the time and know a lot of property owners from over the years.

Should I use this money to purchase a new property with all cash offer of $80k or using this 80k as a down payment to purchase a larger property such as a multiple family or commercial property?

You can hire an attorney and sue for larger amounts, but are you ever going to collect?

With a portfolio loan my down payment is larger, and I am having trouble coming up with the money.