I'll try to help with the work tables. I use them as individual stations. I have three. The size is 30 x 72 with the bottom shelf. Each has everything to bake, including a mixer. This is good for two reasons. You can have two or more projects going at one time, or if you choose to add employees, there is room.
As for the rest, refer to your business plan concerning output needed and capacity. This will give you the minimums on numbers of pans, etc.
If you have not written a business plan, start the process. This may take a few months to complete. But once you have the information, the costs, your prices, equipment needed, etc., will fall into place.
I have tons of old posts about how to do a business plan. But if you get stuck, many CC members will be available to help.