As an alternative, you can add the "room" later. Close mic the kit during the original tracking session then choose a room you like and set up a speaker (or two) and a mic (or two ) in that room. Send a submix of the kit to the speaker(s) and track the ambience in the room. You can have a lot of fun with mic placement and compression on this (an IBP is your friend!) and it can really yield some great results. HTH
