Remember that the super shooters you see at the matches would still clean your clock if you switched guns with them.
I suggest doing a lot of match-oriented practice shooting and shoot the matches before considering spending money on more equipment.
Spend more money on practice ammo and less on other equipment. It'll have the best net effect for quite awhile. (My definition of "best" is defined as you learning how to shoot well and repeatably rather than obtaining more points in the match.)
(This from a guy who was a C class IPSC shooter using a stock 1911 from an Uncle Mike's holster and gun belt and random ammo pouches for the mags. I often outshot guys who'd bought raceguns and I still hadn't maxed out my equipment's capability.)