I'd just take the smallest 35mm body with lenses around 28/50/135mm and as much film as you can sensibly fit into your pack (after the essentials, obviously).
<snip> it takes a while to get anywhere, but that's part of the fun.
Got a (train) ticket to ride, so will be heading up to the Lakes for the first week of November. Camera of choice will be a Wista 5x4 along with 135/180/300mm lenses (haven't decided on the 90mm yet) and a tripod. Hopefully, the tent/sleeping bag(s) will weigh less than the camera gear.
Being on foot and most of the spots I plan on visiting are well away from roads or green lanes, I may be gone some time...