You should. It's a nice bike. What I have noticed almost immediately (I was out in the parking lot) is how much better it takes tight turns than my Vita Elite. I find Vita a very snappy bike, very nimble for a hybrid.
And also, the temptation of Diverge is that it's E5 aluminum, as opposed to A1.
Diverge 44 will fit you for sure. even 48 is a fairly small bike.