Work with the client.
Initially he wanted me to come in while he was working. This doesn't work with a space as personal as a closet. I found out just how often he does wear all those t-shirts and that he loves his collection of hats. I also discovered how committed he is to running and a dedicated sports closet is the end result. I also discovered the frequency that he uses things from ski wear to flannel wear.
Work with what the client has.
Dry cleaning Hangers. He uses dry cleaners more than most so I used his dry cleaning hangers for the things that get dry cleaned. All button downs went on metal because, let's face it, when's the last time you switched hangers after picking up your button downs. His golf shirts got the plastic hangers because they go in the washer and weigh more than a tee. T-Shirts got metal hangers because they are light weight and we had a million of them. Suits got heavy duty hangers. Pants were a mix of D/C hangers with cardboard overlay and clip hangers. Extra hangers went in every closet afterwards. Excess hangers were hung from the bottom shelf in the linen closet.
Don't create work where none is necessary.
The closet shelves stayed where they were hung. The laundry closet was functional and organized; we only utilized the free space that was already there.
Buy only what you need up front.
In all, he bought one closet bracket because he saw the guest room closet wasn't braced at one end.
Buy what you think would improve the situation after you know what the situation is.
In the end, I had two BUY recommendations. First, a covered plastic box for odd-and-ends for the linen closet. Second, a set of deep drawers to store running shorts in the athletic use closet. We discovered a need for these after the organization was finished.