If you install a code based lock you won't have a way to connect to it over the Internet.

I would say that's pretty much the standard and based on starting with your own funds. 

They can guide you on the best approach to financing based on your goals, creditworthiness, and current financial situation.Consider your long-term strategy.

The new property's depreciation is based on its value, not what you had in the old one. 

The op is of Seattle, and every little surrounding city has adopted their own set of rental laws(many following and based on Seattle, Portland, Tacoma, etc.  

Assuming it is based on your profile I would post and mail a 60 notice of lease termination. 

Additionally, I'm based in Michigan, and I would like to know if anyone in the community is familiar with companies or professionals in Michigan who can assist in the process of forming an LLC and managing the legal aspects of transitioning Airbnb properties.Any insights or experiences you can share would be immensely helpful as I navigate this potential transition.

Once you have that its just a decision based on numbers. 

(searching "home inspectors association" will give you all of these as top results), and then searching for a home inspector based on location.

One of the things I've noticed is that the flooring and underlayment options usually give an STC rating based on their use on 8" concrete subfloors.Part of the rating given is being attributed based on what type of subfloor it is and would be a lower rating than with the plywood subfloors.