ZZ be aware that you might well find yourself as BM if you express a desire to be one as it is not a job many want. The extra pay is minimal and not worth the additional work, stress and frequent complaints from customer and head office. Most guys I know who take the BM route do so because they are looking at a managerial position down the track.
This must also be one of the few industries where a person can become a BM with absolutely no experience, training, talent or ability. I've seen some shockers.