Try thinking about what kind of business you want to do. And then
think of how you might describe it to the city. Could it be that you
are selling metal architectural parts? Never mind where you get them.
For all the city knows you might be importing them from Bainbridge.
The city is likely to look favorably on consulting, retail sales( if
not heavy traffic ) , design, etc. Not likely to like the idea of you
manufacturing and selling to a wholesaler.

Once you have a license, they are likely to forgive the occasional work
you have to do to modify something so that it works for the builder (
unless the neighbors complain ).

Dan