Professional musicians, you are free to sit this one out. DJ space is probably not going to fill your needs. Unless you need to play god, turning the planets themselves into musical instruments as you conduct a cosmic electronic orchestra with naught but your fingertips. If that's something you've needed, then yes DJ space will serve your purposes quite nicely.
FL Studio this is not, however as the saying goes, "If you want to mix sweet tracks from scratch, you must first invent the universe." The app functions very similarly to Garage Band in that you select from pre-recorded loops of music and assemble them into tracks.