The latter can be addressed with additional awareness on your environment.
Backpacking backpacks are usually sized for a hiker based on torso length for best fit and maximum comfort. Remember, think about what your aptitude is and what the place is like where you are going.
DISCLAIMER: DMOZing.com is not affiliated in any way, shape, or form with DMOZ, AOL, Netscape, their management, entities or their official websites. Links to external websites on this website does not constitute endorsement.