Basically, I'm open to the best area to attract STR tennents, as well as long term "snow birds" to maximize my annual revenue.

This is the simplest method, but it also means your tenants are more likely to abuse the utilities by leaving windows open with the heat or A/C running, leaving lights on, ignoring the toilet that constantly flushes on its own, etc.3.

I am mindful of building something that we will be able to scale and make more impact- and I know making this beneficial to investors in some capacity will be key. 

I'm open to any advice.

There is a difference in some people's minds between a "mentor" and a "coach".

I know years have passed but would you be open to discuss about investing in Japan ?  

Mind sharing some of your experience with the agency/ies through email? 

Mind sharing your experience?

are you and your partner both listed on the deed - this is tenants in common where each person would report his / her share on his / her return(assumed unmarried partner)If the property was purchased through an LLC, there may be a separate partnership filing obligation(assuming unmarried partner)Also be mindful, that normally only one person can take advantage of treating the STR as an active property on their return.

Keep in mind by building and then selling the home you are going to be taxed at STCG (effectively ordinary income) whereas the land, could be taxed at LTCG.