I've got the internal partitions installed, and the drawer slides are in. There's not a lot of extra clearance around the motor, but it fits in there just fine. The existing tools I have for the lathe fit in the smaller top drawer along with the accessories, leaving the bottom drawer for future purchases. I haven't decided if I'll put in the top drawer to the right of the motor or not. It might work just as well to have a door on it.
I'm still not sure what's the best idea for the grinder. I came up with a way to have it swing up to working height, but it requires its weight to be suspended upside down on a hinge when not in use. For now I might just defer doing anything beyond the open cubby.
Now I just need to figure out how to do a 3" high angled rip cut to make the drawer fronts. This is when I really wish I had a band saw. Right now I'm thinking I'll go as high as I can with the table saw and then finish with a hand saw and plane.