CDJ 400 & rekordbox

Hello 

I'm going to do my 5th gig soon and this time i'm getting a pioneer 400 set, (2x cdj 400 & djm 400). I am really worried about this because in the other 4 gigs i was always suited with the standard 2000nexus one. At my bedroom i have the 2000nexus one myself. My question is:

-do my rekordbox-analysed tracks that are put on my USB still work on the cdj 400?

-If emergency strikes, is it possible to let a 1hour premade set (track) play? or won't it be able to accept such long tracks

Thank you for clarifying and I'm sorry if these questions are dumb, i'm a rookie at this.

Thanks alot!!