I've just packed my Berghaus centurio with side pockets,30l pack and 10l pockets.
In it i have spare trousers,socks,t shirt and underwear.
wash kit, hobo stove with mugs and gas, wee airic sleepmat, wee pillow, sleeping booties, brew kit, bcb mess tins, 2x litre water bottles, food for 1-2 nights, poncho, issue basha (as groundsheet if needed), shemagh, cap, leather gloves.
In pockets are down sleeping bag in bivi bag.
DD 3x3 tarp, scout hammock and midge net.
1st aid kit in lid pocket with headtorch compass fire starting kit etc.
Axe and saw in space behind side pocket.
Bit of a squeeze but do-able.
What i think i need to be comfy.
No way I could get in a 35l sac though.