hi there Dell'Amore,
I'm sorry to hear you are leaving a location you built out! We're in a similar dilemma - we built out every inch of our space - drywall, ductwork, the works! Unfortunately, it has empowered our landlord to totally ignore our lease.
Here's some advice I received recently from a real estate lawyer regarding fixtures - if you can take it all out in one night, it's going to be tough for the Landlord to claim that it was permanently attached.
If I were you, I would take it all - it is yours! Make sure you have your proof of purchase somewhere, and move on to your new location.
Consult with your lawyer immediately - especially if you have a security deposit. Also, if you need to do a final walkthrough with your Landlord, and you think he's going to be upset, maybe you'd prefer your lawyer be there instead of you.
Good luck at your new location !!