Got the workbenches done. Feels like it took about 20 trips to Lowes/Home Depot. I think they came out well. I ran the tops long on three sides on the main tables to give some clamping area. I was hoping the flush end would allow me set the tables side by side with no gap, but the legs aren't straight enough so I end up with a gap. In hindsight, I should have just left an overhang on all 4 sides. Overall, very happy with how they turned out. The casters were definitely worth it; rolls well, but very stable when locked - I locked all four wheels on each. I think they're going to be very practical with lots of storage underneath.
They already take up a lot of room in the garage. I don't know how I'm going to fit an airplane in here too!
And big thanks to my neighbor Darin for letting me use his miter saw.