The last time I represented a mobile home park purchaser, county health department allowed four MHs per septic tank. 

If borrowing, use a non-recourse loan since personal guarantees aren't allowed.

I can't tell if you want to buy land from an owner who finances or if you have the funds to buy and then sell the lots with you being the owner who is financing to individual lot purchasers?

Hawaiian real estate law differs from other western states significantly, mostly due to its monarchal heritage and the Bishop Trust influence.The basics are the same as would be in California; determine the condition of title ownership (individual(s), estate (including conservatorship, if appropriate) OR fiduciary acting for trust.Use a qualified private money equity lender to make a loan sufficient to buy out the cash-only beneficiaryThe legal community in HI and Big Island in particular is small.

What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

STR's are currently not allowed unless you occupy the property.

,Renting your primary home back to yourself isn’t typically allowed by the IRS for tax purposes, even if structured through an LLC.

Home prices in OKC remain affordable compared to national averages, allowing investors to acquire properties with strong cash flow potential.

Actually, to allow access it is an authorization. 

Non-renewal notice sent today and posted on their door, allowing for them to leave anytime between Feb 1 and March 31 with a refund of their rent on a per diem basis (if they've paid for that month).