Pot stand in pic is upside down - it fits inside the rim of the primer dish [lid off a soup can]. Height was determined as roughly where initial flames peaked , if that makes sense.
Once you've found/made a level patch of ground it's sturdy enough for the small kettle/pan and the small frying pan I use. Cooked up a fine breakfast of bacon sausage and beans with a mug of tea when I used it a few weeks ago.
To pack it all into the tub items go in the following order -
pot stand upside down - windshields - both stoves - penny's - snuffer[?] - windshield pegs[ pushed down sides at 12,4 and 8 o'clock] - primer dish
You might have to cut a small 'V' at either side of the lip on the tub to allow a bit of give. This is not a problem as the tub is made sturdy by wrapping in Gorilla or duct tape.