Which Stroker for 400 and 7-8lbs boost on E85

Okay so Im building a stoked out 400 block motor. I plan to run a pro charger with 7-8 lbs of boost on e85. I just got the 400 block back from the machine shop and it is bored 35 over.

Iv'e been researching and debating which 440 source stroker kit to get. Link: http://store.440source.com/Stroker-Kits/products/3/

Here's the thing they are all the same price so a part of me wants to go big. :)
The 451 is the most sound option. I don't care for the 512 or the 470 because of the low distance below deck height. The 500 stroker kit sounds nice but I am not sure about the oil support rail and the short piston being a good idea for a low boost setup. Even though the 451 is the most sound it would suck to spend the same amount of money and get less cubic inches.

Just asking for opinions as to which one I should go with for my low boost setup?? Maybe the low deck height isn't a big deal? Maybe the oil support rail and short piston can handle low boost? If the 451 is the best option I will go with that but just wanted other opinions before my money is spent.

Thanks!!