Congratulations Flyingemu
I think you will probably really enjoy the job. If you have always wanted to do it then i say go for it and try to enjoy it. The way i think is if you do the hard yards at Jetstar (which you will, believe me. there is no glamour

) you will want to later try and get into qf or virgin. At least you will have airline experience and you will appreciate working for full service so much more after working for jq. Just a thought.
I met a few new recruits in the current ground school and they seemed really happy so i hope you enjoy it too.