I prefer to use a trail bike rather then a dj bike for my dj'er. I built up a 17" Jamis Komodo and use 24" wheels whith hookworms. The main reason for using the different frame is I can usually get a better deal on them and dj'ing is mainly just practice and something I do not do on a regular basis.
If you want a dj specific frame look at SouldCyles, Evil, Kona, etc. ... there are a lot of great dj bikes out there. It will just depend on how much you want to spend.
Yes. The Rumble is a great frame. Very strong. If you get a good deal on it and it is in good condition it should work good for ya.
