750 Edelbrock on a mild 400??

I have a mild 400 with 452 heads, older Hughes 470 lift cam and a '69 383 intake with the Edelbrock 750 carb. It's runs decent for what it is but are the 750 Edelbrocks a little lean for the big block Mopars? I hear that they are...

I know the single exhaust is not helping things but it's what I have for now.
But is there a better choice as far as a carb goes or will the 750 be fine with a little tuning and or changing jets around? I do have a Performer 383 intake that I am planning on installing.

It's in a '65 Newport coupe that I am going to be driving often. High 2 something rear gears..etc. I'm not asking this ride to be the end all ultimate power and gas mileage ride, however it' never hurts to make something as balanced and effecient as you can.