Reply to Still trying to make a setup [Opinions needed] [soundcard etc.]

Okay at the moment i am using -
1x Traktor x1
1x Launchpad mapping for traktor
1x Vms4 traktor mapping

I'm about to switch to vinyl and a DVS after my next gig -
1) First off i was believeing i need a soundcard unless i want to bring my VMS4 to gigs, but most clubs already have a mixer, so would be pretty annoying
2) Which soundcard should i get, since x1 and launchpad are usb ports - But still when i'm at the house and want to use my mixer and my turntables.
3) What soundcard do i need to run a backup cdj at clubs [if possible], since i don't have faith in it half of the times.