Yes, you have the right idea, however you do realise that from the day you start the Kingston course, you have effectively started the clock. Start Kingston Sep 09 and you will have completed the atpl exams by July 11, which then means you then have to get the cpl/ir done in 36 months.
If that timescale suits you then go for it, but as long as you are aware that the clock starts ticking on your first day.