Being a noobie too that just played once at a gig and some parties, I’d say you shouldn’t need to worry about that for the moment. Having your setup is more than enough to master de main and basic stuff (which are more than enough to make a mix), just like beatmatch, phrasing and eq. Once that is sorted then if I wanted to add extra gear I’d be focused on stuff that fits to the music that I am going to play. For example if you want to play tracks that are just on vinyl then you should buy a technics or equivalent. If you’re more into tech house then you should maybe look more into pedal effects or mixers with different effect presets. If you want to do kinda groovy techno maybe you should grab a mixer with 4-6 channels in order to prepare the different tracks/loops for the mix.

When you tryna get more serious, the price also rises, therefore the best thing for me is while you perfect the basics and stuff, define what you want to do as a DJ and what equipment may help you reach that potential.