I'm an audiophile and retired CFP(r), financial advisor. I worked in an office that was mainly a trust and estate law. Saw way too many families fight over inheritances, especially valuable collections/items.
My suggestion is to simplify as much as possible. Being an executor of a will or successor trustee of a trust is a lot of work (and aggravation). Give away or sell stuff now and give the money to your beneficiaries, family, friends, charities. The benefit to you? Seeing the joy it brings to others (See the book Happy Money).
Idea. Write your instructions out yourself and have it notarize.
Another idea. If you have teenage grandchildren who work part-time/summers. Fund a Roth IRA for them.
Years ago my daughters told me that they did not want my collection of Grateful Dead bootlegs. And my wife won't touch my stereo.
Finally, talk to a lawyer with lots of experience administering estates. It is worth the money.