Just to provide a counterpoint to the above (VERY) nice benches. A couple recommendations re: benches helped me before I built mine and have since served me very well into the fuselage:
1. Don't inset the back rivet plate--Most are 1/4" thick, so just pick up some scraps of 1/4" plywood or MDF. That way you can orient the back rivet plate any direction you want... this will change depending on the size/shape/part of what you are riveting. Moreover, I think that most builders will find having longer back riveting plates (pick up from Lowes for $10) to be really helpful for doing the trailing edges where you want the entire edge weighted down while back riveting. If you do have multiple back rivet plates, the inset is less useful. Also, unless your workbench top is absolutely flat, you may not want to be back riveting trailing edges on it anyway. I use the flat surface I built for my elevators, flaps, rudder, and ailerons and the back rivet plate goes on top of that surrounded by whatever MDF or plywood is necessary to support the pieces.
2. Plan on drilling a lot of holes (many of them accidental, many intentional) on your workbench top. Plan on spilling primer on it. Plan on spilling lacquer thinner and pop on it. Make it disposable and easily replaceable.
3. If you can find good locking casters, use them. This is the one thing I would add to my benches if I stopped building long enough. However, casters that don't lock REALLY well are worse than no casters at all.
4. Plan on your shop organization to change dramatically from what you thought it was going to be before you started building airplane parts. Thus, don't spend too much time over-thinking shop organization unless you've built things like airplanes before! That was definitely true for me and I'd even done a lot of woodworking before!
Hope this helps. Have fun.