According to their website, that driver has a D9 swingweight. That is super heavy by most standards. It is like they expect you to cut the shaft. A rule of thumb has every 1" of shaft you remove lowering the swingweight by 6 points. So taking it to 45.5" should result in a SW of roughly D3. That is about the norm across the industry, or it was recently. Another inch would make it....lets see...C7ish and that is in the realm of ladies clubs. Not that there is anything wrong with that. You can of course compensate by adding 2 grams of head weight to increase one swing weight, 9 grams of shaft weight, OR lessening the grip weight by about 5 grams (per swing weight). All of that being said, I have ventured into this realm before. I would personally advise that if a club needs that much modding off the shelf, it may not be right for you.
Contrary to popular magazine articles and whatnot, I'm not convinced that a longer shaft is THAT much harder to hit in the center of the face (given a little practice and patience). The thing that these articles dont mention, with the whole MOI and COR boom of newer drivers, hitting slightly off center can still give you a playable drive. With these hot faced, high MOI drivers you can still get a playable poke off the toe or heel, but those dead solid perfect shots are SMOKED down the fairway. YMMV