Many of my deals were priced properly, but often the seller or market can't for various reasons see the potential in the property. 

I am afraid we will fall for a property with a false sense of a good deal.Are there any suggestions to help me run an analysis that would better account for the larger down payment and allow me to better analyze potential properties in the future.

Keep in mind, the region is immensely sought after, leading to notably low capitalization rates.Positive cash flow from a rental property becomes challenging; however, there remains potential for substantial returns through appreciation.

EDUCATE YOURSELF - yes, it will take time, but will lead to a selection that better meets your expectations & avoids potentially costly surprises!

Like you mentioned , the prices are going down because a lot of people thought you could just buy a property and slap it on airbnb , expecting it to rent well without doing improvements , not realizing that the market would be overstaturated with " C and D " quality properties ( A+ are the properties i'm speaking of)I'm seeing that you can buy those type properties( A+ potential) that have simply been under utilized and 1.

They will likely count your potential rent as part of their analysis and should give you a good idea of how much you could "buy" based on your situation.

They know the rent is due and they’ll just respect you less and reinforce their believe you’re a weak landlord they can walk over. 

Choose a location with low-cost homeowners insurance because they have the lowest risk of natural disasters: Insurance - ValuePenguinIf you follow the above process, you will now have a short list of potential cities that are very likely to appreciate much faster than others due to their strong fundamentals.

My wife was on the phone with a potential tenant as she was arriving at the building to view the unit.

Report him to your local licensing boards as well as make police reports, even if not a realtor he will get large fines and potentially criminal charges.