or other statements made by their agent ---- if the property is for sale (houses, commercial, land, lots or non-conforming) there is a degree of motivation.

You set your screening standards based on the class of your property.Unless you specifically want welfare tenants in which case you adjust the screening. 

Talk is talk, but valuations are based on closed sales not talk.

And it is only 1500 sqft for both units, so rent will be limited based on the small size and you still have to maintain kitchens and bathrooms for two units, which means high maintenance cost to rent ratio. 

I met with sellers on a regular basis (both in parks and on land).

1031 is for a business or rental, hard to imagine how raw land fits...

Unless you are local or have ties there you can replicate what you can accomplish there in many other markets, especially if you are just buying based on price and rent.

@JP LeonardWhat about creating a land condominium?

REIAs are more speaker-based and sales-focused sometimes, with pitches, but can be great.

Therefore, I would ensure that the current NOI is accurate based on YOUR assumptions, then you can think about how you can increase the NOI by increase revenues or decreasing costs over the coming years IF you were the owner.