Claire, I'm a big FDC fan, my DD1 started 1 day a week when she was 9 mths old and has been a happy FDC child ever since. My main advice is to be quite assertive when it comes to selecting the day carer, you don't have to take the first place that is offered if you have a good reason. That way you'll get a quality carer that's a good fit for both you and your kids, kwim?

BTW - congrats on your TAFE course and good luck with your study. FDC is definitely a bonus if you can get a carer who is able to do extra hours if you need them during peak study/exam times, or if you need to attend an evening tutorial and your other half is not at home.