The round tube I added around the perimeter worked great for clamps, but it was too fat to hang any of my cheap grinders on. I welded in some scrap angle stock on the right side, which worked perfectly:
That's it- all done!
So far, it's been a really great workspace- and while I'm sure I'll modify it in the future as my needs and skills change, this table ought to last a really long time!
I'd be happy to share my SketchUp files, if anyone wants to have a go at something similar.
Thanks for following my post-
Jake