Almost any use of land is better than a mobile home park - which is why most of these parks still around are in far off areas. 

I’m considering having a lawyer send them a certified letter, though I know that will still come with a significant fee, which is still preferable to full service.

There are some great meetups in Northern New Jersey that you can find in the Meetups and Events section here.

If all you are doing is watching YouTube videos, you don't know as much as you think.

You should read every word of your HOA rules.  

You can move forward.

How would you pay for that?

The premise of those opportunities are based on you living there for an extended amount of time.

Re 3X 6X not sure what you are speaking about.I was addressing reserve requirements which do not have anything to do with PITI 

Now this is an annual thing (for all new properties).For rough math, you can generate a tax write off about 15-20% of the real estate value: one a million you can expect a $150k to 200k write-offs.