A top tip to all those applying.
BA is very seniority driven thus, if you want to join, best to get in as quickly as possible at the start of the recruitment phase. That way you will rise through the seniority positions quicker and, as all recruitment is currently on SH, you will start to get control over your rosters quickly as well.
1 years delay now could (and has for some people) mean a couple of years delay in getting a command.
Food for thought.
Good luck.