The trek 700 mug (I guess it could be called a pot, too) is money. It will fit a full sized canister inside. It's a cup, it's a pot, it will heat enough water for two mountain houses and some tea water leftover or your dinner and a big serving of hot tea or coffee.
I like the snow peak gigapower model with the auto ignite. It's prob my third canister stove type...I've used MSR's etc...the snow peak folds up way way way smaller. Also, the auto ignite feature is way worth the extra cash and small amount of weight. You don't have to dig for your lighter AND you've got an extra fire source if shite really hits the fan.
I def understand wanting to have the canister remote from the stove, but in cold weather/snow you often will want the canister near the flame to keep the canister warm and to keep the pressure up. In cool weather I use some kind of windscreen all the time, though I wouldn't let a child do it. You just keep an eye on how much heat is going into the canister. In 0 degree snow, I use a mad tight windscreen and that heat being reflected down toward the canister allows the stove to kick ass at a temp when it would otherwise sputter. In 100 degrees...I prob won't use a windscreen at all. Big Boy rules, obviously. I wouldn't give some cub scouts that advice.
Anyway...snow peak with snow peak...great combo
Next thing is get the smaller snow peak mug that fits the mini canister, same stove (I think it's the 400 mug but I don't remember). Those two sized mugs are my two cooking setups. One is good for short trips and it's way way smaller and fits in a smaller pack...the other is the long trip version. Noticeably bigger but still small.