Either they didn't pay attention or they are hoping you will look past their shortcomings.You could change the Google form to have multiple choice and a comment that says "Credit below 680 not allowed", so your credit choices may be something like "680-720, 721-800 and 800+".

Your basic insurance policy with $300,000 in liability coverage should be sufficient in 99.999% of all lawsuits.5.

Would a boilerplate one from google be sufficient, or would it be better to consult a local attorney to write one? 

Mine says in very simple terms:Who is buyer and seller (names or entities)Purchase price (number and written out in words)Earnest money amount and who it will be delivered to (title company of your choice) within x days of execution.

I believe I have a sufficient understanding of wholesaling, seller financing, BRRRR, et cetera to successfully complete a deal, but I wanted to see if there was anything specific that you would recommend I do before jumping in. 

I don't have a RE license so I don't have direct access to the MLS, do you think using zillow / redfin and entering the sales data into Excel would be sufficient?

There really isn't general information, not even PNW is sufficiently local.

If you prefer, you can really crunch the numbers and come up with a more specific calculation for each situation, but I think you'll find 50% is sufficient most of the time.

As @Steve K. suggested, the tendency is for governments to reassess the ownership and control of direct coastal areas, a tendency that isn't in your favor.If I absolutely wanted to own a beach adjacent property in Costa Rica to live in and would have no other choice than buying a concession, I'd consider it but then I would only buy if the amount of my investment is equal or lower than the perceived value of the enjoyment I'd get from the property over the remaining time the concession.I assume that you won't buy the lot waiting for the concession without getting it first or you might make the purchase of that or both lots subject to getting the second concession.

My wife and I ended up renting a house, and looking back, it was the right choice since we might be moving out of state next year and buying would have costed us 2-3k more per month.