hey man, good choice. I have a KM Zahirah and it has the rumble but no tray rattle so keep in mind that "smaller" KMs may perform differently in that regard. At least in my experience. I am planning to get a QT in the next few days though. I'd like something that smokes well (my friend has a bambino and I love it) but is more portable and can be kept on a desk or endtable. I really don't want to lug my KM around all over when I bring it around. Also I have future plans for a sweet QT stand of sorts.
Sounds like we have the same game plan you just reversed it from mine.
Enjoy the pipe, and with the AF DA all I can say is I hope you like anise (liquorice)
If you want a great appley apple flavor try out AF golden eskandarandi apple - GREAT stuff.