@Justin McWilliams Welcome on board!  

Unless he is holding your company back I would plan to keep him on board and look into growing with him. 

Do I withhold final payment or chalk this up to an expensive lesson learned?

You can call yourself anything you want, but your local board of Realtors will have specific rules on advertising, business cards, sings and such.

In 1946, lead pipe should not have been used;drum traps;unvented fixtures;cast-iron sewer main which is near, or at, end-of-life.General:Asbestos - in flooring (9x9 tiles); drywall mud; pipe wrap; external siding;rock board / plaster board - drywall was still a relatively "new" thing and some of the early iterations were hard boards intended to replace lath as a substrate for plaster;barker board - common in kitchens and bathrooms;gypsum wool insulation  - paper-backed insulation batts spun from molten rock and slag.  

Video content is also great for boosting UX metrics.3) No end to reading and researchAs a content creating company it is mandatory to be an avid reader and spend much of your time in reading on different platforms of social media, message boards, blogs, review sites—anywhere potential leads could be hanging out online—and follow closely to understand what they’re talking about and what content is being sold to us.

Welcome @Jacob Hinojos and nice to see another Lubbock face on the board.

OK...we are waiting for the BP board attorney to give their opinion now that they have had a chance to review:@Tom Gimerfree of course:)

We are replacing the gypsum board and using a fairly expensive system to replace the moisture barrier and insulation.  

I'm not a lawyer, but I have heard from several investors that even if you set up an LLC outside CA you will still need to register with the CA franchise tax board and pay $800.