Good question....how much is to much? IMHO that is about personal preference...one of the old "rules" that I use, of course it is tempered by parameters within the situation-and that is important: is 25%-30% of body weight for females and 40%-50% of body weight for male. An old backpacking bench mark, tempered with common sense and condition. Carrying to much weight at one time is not fun, unsafe, and well asking for troubles. The cool thing about the mode of travel in the crown and BW is one can make as many trips over the portages as one desires and the goals of the trip religate. An open door so speak; never have brought the kitchen sink though ;)

One question for you Kenny B-does the DSLR have video abilities? Most of the new ones do and actually shoot better quality video than the dedicated video cameras. Extra batteries and memory cards/storage for the DSLR maybe be of less mass than the video camera itself.