First Carb Syncing

Never having done that either, I would say that it is looking good.
However, for my next trick I would take it up to something like 2-2500rpm and then see if the readings are (almost ) the same. That would tell you if the throttles are in sync or not - well it would by my reckoning.
In the good old days of Amal Concentric carbs on a '69 Bonneville, I would set and balance the carbs at tickover speed and then balance the throttle slides moment of opening using a pair of matchsticks (the longer the better - what air filter?) each one lodged under a throttle slide to see which moved first and then make the appropriate adjustments.
Well, it worked for me!
Others may have a more technical solution which will undoubtedly make my brain hurt!

 

Looking good to me mate