I think half of you guys are talking about 3D and the other half are talking about 3G =p
anyway, you can only use 1 kernel.
HYPER won't make your 3G any slower and yes, it includes the 3D booster you guys talk about, which is just a value in the ramdisk changed from 0 to 1 lol.
3G Turbo is build.prop and init.d shit, but if your using CTMod 3G is already optimized so you don't need to use it.