Alrighty... since this is for the guardian cup, which is a decent competitive level event, and I assume your goal is to have fun but win more than you lose I'll make suggestions with that in mind. I also am going make the assumption that you can either buy or make models somewhat quickly.
Up those shokk attack gun numbers. And put them in the blood moons battalion and make it the specialist detachment. Because of you I've come to see shokk attack guns as awesome, jam 3 in, 1 as the relic an laugh as you "vlorrp" things.
KFF doesn't care what detachment it is in. It'll protect anyone.
Shave the kombi-rokkits. If you add more shokk attack gunz (which can be character hidden, shoot just as many shots but with rerolls of 1's) you dont need them. Which gives you enough points for your other problem. Not enough boys. Those squad need to be as close to 30 as points allow. 20 or less means 20 attacks left off the table.
Not a fan of mad dok. I feel he could be more storm boys. I have other idea but that would really mess with what your doing.