Yup, its kind of cheap.

If they release a gooding android phone with YES 4G, I'll grab it for sure

You can flash a custom kernel to a stock rom, but you have to check if that kernel is compatible with the stock rom or not.

Flash kernel means it can overclock, not will overclock. You have to install SetCPU to overclock it.

Worry here is sometimes the kernel won't suit stock ROMS, and sometimes it can make things slower instead of faster.

You can choose not to flash the radio if you like

The radio affects reception and battery life, so if you find the battery life draining much faster than usual, then you have to flash another radio, otherwise you don't need to.

It seems that everyone's busy nowadays

Yes, just install like a normal app. I tried it too and it works nicely