Reply to Djm 250 and efx 1000

So i did search but couldn't find an answer.
I'm believeing about buying a djm 250 and later a efx 1000 but my concern is if I can connect them both (probably the answer is through the aux) and how will be the sound quality.
I want to play at clubs and I want to be able to bring my set-up to there so I really need sound quality on loud enviromnents.

So how will be the sound quality and how should I connect them?
(Sorry for begginer questions)