You've probably had all the advice and suggestions you'll need for now, but I'll chip in all the same. As soon as I bought the FM3 I enrolled into Cooper's FM3 Master Class... and found it SO useful on so many levels - in terms of greatly furthering my knowledge of the unit and how to get the very best out of it.
I'm not great with manuals and not at all intuitive when it comes to anything technical or computer related, so to be able to watch Cooper go through the very basics of the FM3, to it's much more advanced capabilities was incredibly helpful and, as a result, I am very comfortable building my own presets from scratch. I can't comment on the Austin Buddy packs - never owned any - but I've no doubt the good folks on this forum will have already addressed your AB questions. Good luck.