I'm one of those people that unfortunately used to be connected to OASC too and to be honest if you're positive when you're there it goes a long way towards the end result. The main people they don't want is people that turn up thinking they already are pilots! As for branch choice, I'm not convinced it's as easy to cross over at iot now, especially with such a shortage of aircrew places but you never know! Good luck and hopefully you'll soon be enjoying the 'delights' of iot!
