When I went to the garage to cut PVC pipe with the mitre-saw,
I looked at your workbench. It will be very useful as it is;
but you might or might not want to consider the following.

1. It's 44 inches high. Standard height of kitchen counters
is 36 inches. Standard height of tables is 30 inches. Select
whatever height is most convenient for you. I can manage with
any height.

2. You might consider leveling it by means:
a) of threaded 3/8 inch rods mounted in adapters such as
I used in Konnarock to support the plywood cover of the hole 
in the ceiling.
b) of steel (or copper) pipes fitted in clamps screwed to the
legs of the bench. Such clamps are standard for securing
plumbing pipes. The clamps would be loosened and tightend
to adjust the projection of pipe. If you wished you could 
fit the lower end of each pipe with a small wooden plate 
to which was screwed a caster. This would make the bench movable.

3. To save space, you might consider placing the bench parallel to 
and slightly in front of the canoe. 

Nathaniel stopped by. I thought he was remarkably self-possessed.
He seemed to me very well.