Dove Heads vs Edelbrock for 390 build

[PJS50]

Howdy all... I'm a newbie to this board but I have been watching it for a while and I have to give you all a big thumbs up...! Let me tell you what I have going on...
I have a '69 390 from an LTD that I had when I was younger (car got totaled by a drunk COP...Long story). I pulled the motor and kept it...52000 original miles. I wanna put it in an Everett Morrison kit.
I was planning on boring it .030 over just to get a good clean starting point. Forged pistons in the 10.5:1 range compression. I want to build it with a single 4 bbl carb, probably Holley (I know how to tune them well), in the 700-750 CFM range. Since I would like to shave weight and increase the flow I am committed to aluminum heads & matched intake. I have know about Dove for a long time and have always heard good thing about their heads. The "guy" at Dove recommended to me the Canadian Cobra Jet heads that they make (58cc or 72cc chambers?) which have valve sizes of 2.1" intake; 1.65 exhaust. He also recommended their single plane mainfold. On this board, a lot of you seem very pleased with the Edelbrock heads, which come with 2.09" intake and 1.66" exhaust valves, but I guess they can be made to take 2.19" intakes & 1.73" exhausts. I ran into an engine builder locally that I have swung a "deal" with to do the boring ect, and he is going to custom grind me a hyd. roller cam for the above.
First off, which set of heads flow better in the first place? Second, are the ports on either of these 2 brands pretty clean from a flow aspect or would it be worth it to buy them broken down and have "my guy" port them and put them together? Edelbrock doesn't offer a single plane manifold to hook up to these heads right? I have a Performer dual plane one right now, should I just shave the plenum and use it, or will a single plane be that much better like the Dove guy says? Ideally, I would be very happy if I could get 425-450HP out of this sucker and still be streetable. I was hoping to keep the redline at about 6500rpms so that I wouldn't have to worry too much about the 2 bolt lower and the nodular crank... Right?
It's been a while since I have owned a "go fast" car so I am trying to get back into the swing of things here... Any suggestions or comments would be greatly valued...
Thanks,
Pat
p.s. Along with the motor, I kept the tranny, it's a C-6 auto with the same mileage (they have never been un-mated) I would be willing to swap the trans for a Lakewood bell housing or a flywheel for my motor... email me if interested...