I agree, about eye height or just below, the stand does allow for rotation of the bike so you could work height that way. BUT........
If you really want an adjustable height. I have a solution for you
If I recall properly, that wall plate is about 4-5" wide.
Mount it to a 20"x12" piece of 3/4 plywood and then mount the plywood to two vertical pieces of Superstrut (home depot) on 16" OC studs
The two pieces of strut must be plumb & parallel to allow the plywood to slide up or down and then secured by tightening the 3/8 bolts, washers & 3/8 spring nuts.(spring are cut off nuts to allow them to slide easier)
Holes thru plywood for 3/8 bolts should be 1/2" to allow some tolerance and wiggle room..3/8 bolts should be short enough to not bottom out on the base of the strut
Working height should be adjusted before mounting bike to work stand
