Since these 8 pieces were never officially subdivided (just subdivided by a fraudulant survey map and sold to 8 different people), When the developer are going to come sniffing around in the next few years, I'll be able to file for 'partition by sale' and force the other 2 property owners to sell, because a judge would see the development as 'highest and best use'. 

Once you get the park in escrow, you will want to do a rent survey to confirm the $475 rent is actually attainable.  

She is ignoring phone calls and clearly avoiding me.I'm certain that she's changed her mind and seems to think if she ignores me, I'll disappear.The contract agreement stated that I, the buyer would pay all legal and closing costs.Thus far I've accrued over $2000 in costs for legal fees, title search and sight survey.

-I've been using rentometer.com for a back-of-the-napkin rental survey to see the variety of rental rates for an area.

A website that i visited called "exacta" wants to do a boundary survey and charge me $900.

It may as simple as getting a survey for the correct legal discription and then applying to the property assessor and tax collecter for a parcel id number.

What is required to make the house livable (certificate of occupancy, surveys, etc)3.

Typical buyer costs include appraisals and surveys (usually required when financing), recording fees, title insurance (negotiable who pays for that), etc. 

Freddie Mac weekly mortgage survey https://www.freddiemac.com/pmm...

Its in the title policy and survey section of the contract, just check "buyer" will pay for title policy and or survey.