Hello, good stuff pretty much what I would like to do with my eldest daughter this year (7 year old)
I use a meths stove, however if you have a gas bottle, try to keep it warm, I know someone who puts it in their jacket for a while. Also put something down to insulate the stove from the cold ground.
I plan to get my daughter her own little tablet/esbit style stove, so she feels she has her own stove and its a handy backup to carry.