Is this Kitpvp season 9 or kit s10?
Kit season 9
I would recommend the Revenge kit it can collect your quite a lot of kills
Also making your custom kit by buying stuff at spawn and making the ultimate gear
Or you could spend real money and get diamond gear with the ancient key that will literally make you overpowered
Kit Season 10
I would just recommend playing a lot at the start as it will be really thriving and the chaos of 50+ people jumping down into the kit map will allow for a lot of cleaning to occur.
Hope this helped :)