if you keep you feed light and don't over do it, you don't need to flush in soil
i would remove every fan leaf off the plant, and cut back longer leaves before cutting the plant down, its a lot easier, after i would cut the branches but keep them as long as you can
you need to hang a line in your flower room, or could use a clothes airer or make something up
so you can hang the branches to dry, it takes longer but the buds dry even so the buds taste better
the room needs a good airflow so keep the fans on low,
about the temps, keep the room about 20c and the buds should dry in 7-10 days, ready to be cured in glass jars, for up to 6 mouths ( but can last years) , if you have any left by them lol