When packed correctly, the bulk of the pack's weight rides lower on your back than with an external frame pack, which has a higher center of gravity. Also, external frames are more likely to catch on branches. Because internal frames hold the load close to your body, you have a free range of motion when you are poling, skiing and climbing. You also have better balance as you navigate over slippery snow conditions. You need a tough, reliable stove that will heat water quickly and work well in low temperatures.
Many campers prefer white gas or unleaded fuel, which is additive-free gas.
Check to be sure your fuel and your stove are compatible. While it is tempting to cook in your tent for warmth, especially during a snow storm, do not. Stoves produce carbon monoxide fumes and priming stoves can cause flame-ups, which can melt your tent. If you must cook near your tent, set it up outside and check for proper clearance from stove flare-ups. Tent material is flammable.