We will be taking both upclose and portrait/lifestyle shots that may have a sharp foreground and a somewhat blurred background. The idea is to capture photos like the ones here: https://www.facebook.com/fb.suitsupply. Our company makes custom tailored shirts.
I can't add to what Mark, Jerad, and Brandon have suggested. All give great advice. My suggestion would be to follow Jerad's second bit of advice and rent several lenses. In my practice there are some lenses I use all the time, and some I use very, very rarely. Those latter are the ones I rent because I need their specific qualities, but don't have the capital to own them outright.