650 or 750 cfm. carb??

This is an interesting thread. I'm in the same boat as this guy. I'm haggling over carb size. I have a 360 boared .40 over with a Comp 268 extreme energy cam, edelbrock rpm intake, rpm heads, headers, and currently have a 750 dp no choke carb on it. I'm adding 125 shot of nitrous in the fall. The 750 dp drinks gas like you wouldn't believe. Ran out yesterday on the way to the gas station.

My car is primarily a street car that will see occasional track time once I complete it. I contacted Holley for the best size carb and their tech recommended a 650. I bought a 670 steet avenger to go on it but noticed that the 670 was for a mild engine. I wouldn't consider my engine "mild". They recommend a 770 for a "hot" engine (I'd say that mine is hot). What would you guys say?