Is there a specific reason why you are wanting to obtain this information 6 months prior to the expiration of the current lease term?

The going rate for short-term private money is 12%.NO private lender can stay in business making loans at half of the market rate!

However, if you as the owner are moving in, that would be a valid reason, so long as you give them ample notice time -- 60 or 90 days I think, depending on how long they've occupied.As for the other tenants, if this is their first lease term and they've lived there for less than a year, you can simply give them a non-renewal 60 days in advance of the end of their lease. 

Worked with Credit Consultant to increase score for better rate and loan terms.

Yes, you may end up "paying them more", but when they are sharing in the equity their win is also your win, so they are likely to work harder and do things a little differently when they get a direct benefit from it.  

Additionally, the rental market in Seattle can be competitive, with seasonal fluctuations affecting short-term rental demand.

The rest will be leased.How do I determine and analyze a potential location for this development in terms of potential lease rates, vacancy rates, potential area growth, post construction value, etc?

I am looking for refinance short term rental.

My house hacking criteria for the last few I have done has been to buy the most expensive 3-4 unit I could with it still at least breaking even after all expenses as a long term rental.

That will help determine if Short term capital gain (ordinary income) or Longterm capital gains.