It depends on so many factors.

But the numbers vary lender to lender and some will make allow for other compensating factors to offset low population / rural numbers.

Having multiple deals going on shouldn't be an issue for most lenders as long as your DTI and other qualifying factors allow for it.

The factors that add to strong appreciation also benefit liquidity.  

There are so many other factors that impact the final price that the square footage of the property is dwarfed by them - beds, baths, age, style, condition, acreage, garage, basement, HVAC, etc, etc, etc.

Know 2 key risk factors before they even get the property address.How much did they smoke? 

@Jeremy KerrProps for stepping out of your comfort zone.To be honest, your worth in this particular deal is whatever the experienced large scale investor thinks it is (assuming you have no finder’s fee written contract in place.)Ballpark estimate in my opinion is that finding the deal might be worth 5% to 10% of the deal pending structure of the deal.If the large scale investor is a person of character and integrity, he should provide some form of compensation given your relationship with this person.My suggestion would be to not focus on the compensation per se but try to learn as much as you can from this person during the evaluation of the deal.

As @Greg Scott and @John Primm mentioned, job growth, population trends, metrics like these can be helpful factors when considering appreciation.

Also, the rents are below market which banks don't like as the rental revenue is of course factored in. 

I like cash flow and don't factor in appreciation as it's minimal in my market, plus I buy-and-hold so appreciation is not a factor for me (and I'm less likely to be reassessed if it's low, which is cool).