why do you keep refering to a "hot cp3"? there is either a modified cp3 or a stock cp3. If the price is that low then maybe your not getting a lot more flow for the extra price? I would hands down go with a dual cp3 setup they can be turned way down for a safe operating level while still maintaining with the ability to run 800+ hp when the engine is able to handle that much hp.
I'm afraid I'd not have enough self control, I'd like to try and see though