Both the liner and the extra pole are about 180g or 6oz.
4 stake set up for fair weather, 6 for winds and or some snow, can take up to 16 stakes (you need to be keen for that...)Sets up fly first , you can then add the extra pole if needed and or the liner.
The liner cuts some headroom but saves you brushing against possibly wet walls.
With it and the mesh doors you end up with a still light 3 person double wall tent.
I am part of Tarptent, however this is not an official video , just me playing with a new camera and that tent.