I've been evaluating a mobile home park with about 1/10 acre of land per pad.  Is this a typical amount of land a resident would expect? 

That being said it is possible to get a line of credit against provided there is sufficient equity. 

Only problem was that his numbers didn’t account for management, capex and sufficient maintenance costs (note, there is a big difference between looking at the prior year’s maintenance expenses versus an average year’s expenses – especially when the property is about to be sold!).

I verify their income is sufficient to pay the bills.

They already offer a "bid room" discount for orders over $1,500 but if you get enough quantity from multiple projects you can begin asking for discounts under $1500 purchases.

This is a material cost and quantities math problem.  

Anywhere convention where the focus is on quantity and not quality is a waste of time. 

For investments that are relatively static and singular in nature - shares of a private placement for example - the services of a self-directed IRA custodian can be sufficient. 

3. is listing agent's declaration of service to tenant alone be sufficient evidence to win an eviction trial?

There are no rules that a borrower gets a loan mod for the asking...or that all borrowers are eligible for a loan mod but, if a lender offers a loan mod as an option, and IF a borrower IS eligible, there are rules that prohibit the lender from not offering one.For a loan modification to be considered, there needs to be documentable income sufficient to service the debt at a subsidized rate/term.