Have the electric outlets raised so you don't have to bend over to use them also having enough of them and a power surge protector right on the electrical box coming into the building for sure fire protection from surges.
In my wildest dreams I always wanted a screen porch to do my sewing in when the weather is nice.
I would not have a lot of drawers because stuff just gets lost or forgotten in them. I like to have my tools in sight just like a garage or carpenters work area. Tools go back to the same spot every time I'm done using them.
Don't forget space for incidentals like a coffee maker, small fridge, copier and stuff like that.
Have fun through the process and keep posting.
peace