Your best bet will be to do a summer season with a charter airline on a temp contract. If you're honest at interview they know you'll be off as soon as you land a F/O 's position.BA probably won't touch you because of this due to high training costs etc.
Or apply to an airline you want to fly for longer term. You can get in, meet all the people including the Ch Pilots and Ops Dir etc.. and it MIGHT be a way in via the back door if you prove yourself as a hard worker etc...
I did 5 yrs in cabin while funding all my training. Yes, you have a much better insight into the cabin side of things and you appreciate the cabin crew.
I don't know your location, but If I was you, I'd apply for GB or Astraeus. PM me if you want. Good luck. BP