But if he is smart, he will walk away anyway and let you sue him rather than take a loss like that.

No HOA, ~450/mo insurance (expensive, high fire area), $400/mo other utilities. 3% maintenance reserve, 3% closing costs etc. 3.2% 30 year fixed 20% down mortgage...could likely shop for better terms with an accepted offer.I'm assuming 20-30% of home value depreciated in the first year via cost segregation study and purchase price of 1.55MM which is an "outlandish" bid well above asking I'm considering but am shocked at how the numbers are still working. 

Better to make sure your paperwork ducks are in a row BEFORE you start shopping for motivated sellers as a beginner.

Where's the best place to shop around for a portfolio loan (I'm in Colorado) and what terms should i be looking for?

We have 50k for a down payment but not sure if purchasing a second home in the Portland/Vancouver market is smart due to how inflated the homes are.

Having a lender on board before you start shopping will definitely help your stress levels. 

They wanted $10,000, plus made me add additional leach field for a conversion from gameroom/shop that already had a full bathroom and kitchen to 1 bedroom ADU.

Blockchain has already been used successfully by startups like ubitquity (https://www.ubitquity.io/about/), which offers an immutable property record system that is backed by blockchain-based smart contracts on the Ethereum network.

Our mortgage payment is $1628 /month which results in a very affordable payment to own a 2000 sqft home with 2.34 acres of land and a few outbuildings on the property to do shop activities.

Tenants are not completely in the dark on rental rates, they probably tell their friends about the great price and how smart they are to get it.