Hi Bexter...in regards to training i may be wrong but i was told that you can't push the training date back. You have to tell them at your interview if you can't make the training date they tell you at the beginning of your interview, which is what i had to do.
Once your contract has been issued with your start date you can't change it.
First flight is generally 2 days after your wings ceremony which is when your training finishes. My friend started on the 8th jan and they have already got their rosters for Feb and most of them have flights 2 days after wings.