Okay, re-thought this given all of your advice and my search of other threads about work space.  Seems like a great setup is an L or U shaped bench.  Since I have a hand joinerery woodworking bench, it seems crazy to cover it up and use it as a base for an assembly table.  I am going to pick you a cheapo workbench from Sears and cover it with 7' x 3' plate glass as an assembly area.  That will in turn be largely covered by sheet metal so I can use magnets.  I will have my existing woodworking be ch with its vises and heft next to the assembly area forming an L.  That should give me great precision for assembly and a great and proven work space for heavier stuff, pounding, power tools and beverage holder.   <div>
</div><div>Many thanks.   </div>