I must be missing something here. You take your first lesson, and already your questioning your instructors qualifications re: what he thinks is best for you..? As you post here, asking what we think. In my mind, it shows you don't have any confidence in your instructor. When I've had lessons, I never second guessed the pro I was working with, I did the drills he prescribed, and I got better over time.
Unless someone like a Very low HC golfer here, or one of the Pro instructors says "maybe" what he told you may be suspect, I would go with the flow, and concentrate on getting your swing better. At some point your going to have to Trust someone. Having 3 or 4 different answers to 1 question may not be the best thing. Just my 3 cents.