DJM 250mk2

I already have a pair of cdj 900 and one ddjsp1 and think now to buy the djm 250mk2. Can anyone let me know if they will all work well together when connected all via usb with rekordbox dj. I just want to know before because i don't want my ddjsp1 to keep disconnected all the time like he did with my djm t1 mixer. Thanks