For the "backpacking" part of my gear I use a pretty ordinary lightweight setup (7 days = approx 15 lbs with food & water). For the photography, the gear I add is determined by the images I plan on shooting. I have used both 4x5 and digital with success.
The 4x5 I use is a Wisner Technical field with various accessories (extension bellows, additional lenses, film carriers, changing bags, etc.). My preference in films runs towards Fuji Velvia. This is because it is what I have used the most and I understand its color balance and other characteristics better than other films. If I need a more neutral color balance, I tend towards the Fuji portrait films. The biggest problem I have with the film rig is weight. The films begins to add up as do the carriers (unless I am using quick loads). Another problem is the limited selection of lenses available. When I was younger, I could compensate by walking. But now that I am getting a little older (and have developed a bum leg and must use a cane even in the flatlands), it is nice to be able to avoid the extra walking by simply changing lenses. To that end, I have begun using digital equipment. (Sort of like Adams when he got older and changed from using large format cameras to shooting with a 2-1/4 square format.) The digital setup that I use is either a 30 Megapixel digital back on a Mamiya 645 or a 20 Megapixel digital SLR manufactured by Canon. Both are excellent cameras, but there is a larger selection of lenses available for the Canon.
If you are buying lenses for a digital SLR, for heaven's sake test them!!! I have bought many a 'top grade' lens only to scrap it because it just wasn't sharp enough for my needs. I currently use a 17-40mm zoom, a 24-70mm zoom, and a 70-200mm zoom for most general purpose work in the backcountry. While not as sharp as using primes, this set gives me a good selection of focal lengths at a minimum of weight. For shooting wildlife, I use either a 100-400mm zoom or my 1000mm telephoto. The 1000mm is for subjects that might pose a threat. (It sometimes pays to be a bit of a coward. Like when shooting brown bear in Alaska.)
No matter which rig I am using, I always carry an assortment of filters to fit each lens (UV, Polarizer, Neutral Density grads, etc.), and my trusty Sekonic meter (NEVER leave home without a good, calibrated, light meter!!!)
The best way to develop a gear list is to examine the types of images you wish to create and determine what equipment is necessary to produce them. Then begin putting together a kit which will enable you to accomplish the objective.
Not sure this addressed you reply, but hope it helped.