If u wanna b a succesful DJ I advise u 2 not use BPM at the start. In this way u will never learn the basics of what a DJ really means. A DJ is creative and succesful when he can mix everything in to anything !
I'm an allround URBAN DJ, but its hard 2 find a steady spot 2 show peeps ur skillz. But believe me, DJ'ing do u have 2 do with ur hearing and feeling, and not with BPM mixin.
Thats my opinion..