My only comment is that there shouldn’t be a decent sound mixer that will want to use your kit to augment their kit as we put a lot of thought, money, and preparation into how our kits work with each piece of gear complementing each other piece.
If we don’t know how well the piece of gear is taken care of, if it has all the necessary accessories, and if it is within spec, we can’t guarantee a professional result with it and we won’t ruin our reputation using it.