The other thing that you guys going through the course, or pondering about putting in your packet may want to think about. Is your high speed low drag rucksack made by "company X" approved to jump either static line or MFF? And I'm not talking is it approved by the company that makes it. You may want to research USASOC Reg 350-2 (Airborne Training, 4 Jun 08), FM 3-05.211(MFF) and FM 3-21.220(SL Operations, Sep 2003) for further info which cover airborne operations and research some safety of use messages.
It would suck to spend all that money on a nice ruck, and then not be able to use it in the woods.
Just something for you to think about........