I'd have to agree with everyone else Jon, I would rework your list. I don't think your issue is hitting power though, I believe it's staying power. Just a heads up on my advice though, I haven't seen the new WoC book so some of what I'm saying could be a bad idea. Putting so many points into chariots is a lot of points in a single d6 on the charge. With so many big ish units that are probably being played these days I feel like the chariots are a bad idea, you can easily roll low on impact hits and then lose 2 chariots for some bs reason. Without the mark of slaanesh on them you could also potentially lose them to ld checks, which could cause things to go even further south for you. I could see you having a really tough time with VC/TK/Skaven. I like everything else in the list though.
I would suggest 2 blocks of marauders and 2 blocks of warriors (I would do 25 man and 12/18 man respectively) in place of the chariots. It will help with the staying power and in addition will help with any possible objectives that might pop up during the tourney. I don't know the minimum unit size on the bloodcrushers, but you could even change your group of three to two groups of two and run them in conjunction with the two marauder blocks. Sure they might get hit with cannon fire, but even 1 bloodcrusher will do quite well in combat with the marauders. I don't know what the points breakdown on this will be, but if 2 blocks of marauders and 2 blocks of warriors is too expensive, then I would just drop 1 block of warriors.
Hope this helps and good luck!