Jeremy,
I'm impressed you could ride your heavy e-bike with minimum assistance for 39 km! Now, let us set some perspective (using Imperial units).
My favourite constant assistance setting for Vado SL is 55/55%. An early long ride with a few mild hills resulted in the average speed of 12.6 mph, and the main battery range was 48 miles. Note: My Vado SL was restricted to 15.5 mph on that ride, which was a contributing factor for a better range. Now, the setting of 40/100% (that can only be set with Specialized App for one of the standard presets such as ECO) gave me the main battery range of 47 mi at average speed of 13.6 mph (more mild hills there); the e-bike was unrestricted, which made it similar to the U.S. Vado SL in the terms of performance.
I think your Vado SL will give you a lot of assistance and a decent range. Especially the Micro Tune, Range, and Range Trend should give you a lot of confidence!
Hills? Well. Turbo and the granny gear if needed!
This waiting must be killing you. Myself, I cannot wait!
P.S. Jeremy, save yourself a little bit of trouble. Please download and install the Specialized App (black icon) now. Set your account on specialized.com to be able to use the App. When collecting the e-bike, please ask the LBS person to pair the Vado SL with your phone. Then you would be able to control your new ride from the first moment! (The Specialized App can be quite confusing in the very beginning)

Also: I trust the LBS guys are professional but ask whether the tyres have been inflated