Amby,You could either Quit Claim it, like @Remington Lyman suggested, or refinance if you are in a position to (don't have a 2020 rate and have some equity in it). 

I did a bit of research and wondering if the current interest rates, high real estate prices, and weak 12-14 week rental period make it a bad investment.

Since the value of the property should remain static at best and might actually decrease over the time involved and the highest bid amount probably would not increase, any overage going to the OP will decrease. 

Our strategy is to buy land cash, take construction loan to build the structures.Some napkin math for this strategy:Land cost : $200,000Building and furnishing Cost: $400,000 for each A-frame (Provided we have electricity, well ready )Airdna revenue estimate shows $400 night rate with 70% occupancy.

If you can sign up and check on your state site is likely the best.  

There are ratings, reviews, and recommendations from other BiggerPockets investors so you can find someone trusted.Give it a whirl and let me know how it works out! 

I am looking for a recommendation for best book to introduce me to syndication as a real estate investment strategy.  

Even if it's a legal issue, the best solution likely flows out of taking care of the people in the situation.

I have about 140k in cash available, and looking for guidance on the best route for funding the second half of constructing a duplex.

Cashed out on a primary to buy an investment when the rates were good.