It is indeed scary sometimes jumping on a new bike. Hell, I often don't cycle between my bikes for months at a time, it always feels oddly different when I perch over a different one...
Take care to position the gear lever appropriately to your footwear. My first test of my ES250/2, although the lever looked in the right position, it actually had to be anticlockwise by 1 tooth. These are all just small things though that get sorted quickly enough after a couple of rides though! You seem like you've been around bikes for many decades so there's no point me saying anything more about that!
Often my mz's (and my suzuki ts185er) are quite smokey initially in the mornings but soon go. HOWEVER, don't forget that riding around in the lower speeds and not emitting smoke is not a sign that the bike WONT smoke when it wants to.. I used to LOVE riding through the city on my commute (low speed, lights, lots of idling) and then joining the dual carriageway.. And straight up to 50 or 60 and smoke for a good mile or two, thick and strong.. I love it. Anyway, it then peters out. But what i'm saying is, use and variables also affect the smoke. I run 30:1