QuiltE

You're on your way to a good ironing station.

I understand your space limitations. If at times you a longer surface, you could attach a flip up wing on the end, and when not in use, it would be out of the way.

As another suggestion ... do a test run before making things permanent ... with the ironing board on top, will you be able to open the top drawers to access things? Or can you put the drawer in the bottom, and leave that top as an open shelf, instead of the bottom?

Also, 3" extension, may not be enough for your tootsies! Compare and check it with your kitchen counter with the counter overhang and the foot hole at the bottom.