If you do not think Zealot's post on the complete synthesis of ketamine is descriptive, you really should not be attempting this synth.
AFAIK, that is the most straight forward route out there. If your just looking to get some K, it would be much easier to just order it IMO. But if you are actually interested in the synth cool, Good Luck To You,
I will not question your chemistry background, however if your are new to the synthing world, this is not the synth for you...