HI airhostessdream
When I had done the maths test we had to fill in the baa ID form and another with general questions about sickness which wasn't on the new app. form (unless I missed it, correct me if I'm wrong. If so that could of been the problem, looked as if I was avoiding the question, which is not so) but I think if you got the job offer then go for it. I think that wage is just during training but you get more once flying.
People say that the money isn't great but the benefits are. I believe the roster they give and the travel you can do with them is worth it but its your decision and what makes you happy is best. Good Luck. Hope I'll be flying with you soon.