Imran H buddy, tbh if it was me that had a chance to get into aviation via BA CE then i would jump to it. Off course you will have to make sacrifices (move etc) but if you are serious about becoming a pilot, if offered take the opportunity
I was recently selected as part of the Thomsonfly scheme and i am over the moon and i am willing to relocate etc basically to do whatever it takes. Sure money is going to be tight (although the payscale for Tfly is awesome) but the benefits out weigh the detractors.
I presume they are going to take 6 as with other courses but it could me more or less.
With regards to other schemes i hear flybe are going to be starting some more courses that will be advertised in july. If you look at the trend GB does a scheme every year like the others
Forget about the negatives if you are serious go for it