not much - simple job.
1 hour max to include draining down the system and fitting small parts caps
Optimistic on the hour I would say.
Do you want the pipes to be capped under the floor?
Why remove the rad? Wardrobes that size need heat. Think airing cupboard.
the reason for it to be removed, is because we are kncking a door way from the main bedroom into the box room and the rad is in the way.
do you need to have a radiator in a walkin wardrobe? it is a very small room, the rad is never turned on as it is.