I tried the B-17 and found it too narrow at the sitbone area, but otherwise a very nice saddle. I'm 6' and a fit 225 and currently ride a B-67, which seems perfect for me. Sounds like you shouldn't have any problems with a 17 aside from the somewhat normal break-in stuff, which, in my experience is very over-rated. In fact, that 17 I had was forming up nicely over the 650 miles I put on it.

Now, as to your choice of bike:
I'm thinking of buying the very same one. So, I'll be back in the hunt for a saddle if the Milano that comes with it doesn't work out. The posture is a little too agressive for the B-67 even tho it's no where near a race bike. I rode the Milano for 2 hours and it seemed ok, but I like to ride at least 3 before I even think my butt hurts.

I'd like to read about your experience with your new ride.