Nice cleaning job!
The acorn nuts are also a nice touch!
Oil consumption in the first 400 miles is really not a long enough period for me to opinionate. Actually, not enough info for me to formulate any helpful comments, sorry.
What did your rebuild entail? Pistons? Rings? Bearings? Camshaft? Valves? Did you resurface the cylinders? How?
Have you seen this?
http://www.mototuneusa.com/break_in_secrets.htm