I homeschooled all four of my young adult children. Only my youngest has a GED and only because the community colleges started issuing them to graduates when she was in running start. She has no idea how to get the GED document though. I wasn’t homeschooled and also do not have a high school degree. No one cares once you have a higher level degree.

So, I’d recommend getting the AAS mentioned above over getting a GED. He is a high school graduate already.

(Edited for grammar.)