Congratulations!
Looks EXACTLY like my set-up that I got about 2 months ago.(Except I have the doser M4)
I have found Anita likes a curved tamper better ?
My grinder setting is between 1.25 and 1.5 numbers on the big black ring greater than the Zero point.
I use about 14.5 g of espresso for a double (I don't use the single basket). This is LESS than a full basket full, I end up doing the WDT, then leveling off with a curved finger to take out more grinds than straight level (I end up having a low spot in the center of the basket).
Tamp about 30 lbs and you should have your puck top CLEARLY below the ridge in the basket, by about a mm or two.
This usually gives me a 23 to 28 second pull before blonding.
Let me know how your first pulls go?
-Craig