Read this: http://www.2gnt.com/?d=How_to_Choose_Fuel_Injectors
And then use this: http://www.rceng.com/technical.aspx

That much power is going to need a large injector unless you want to run high fuel pressure, which breaks shit.

If you are even thinking you might want over 400 HP, drop the SRT Pistons and plan for forged. At that point, super low compression is kind of a waste. The reason the stock 2.4's ran such low compression is because the engineers that designed it wanted to be able to handle 400 HP with cast pistons and rods. If you're not running cast pistons/rods, there's not much point in staying that low. My personal opinion is that you're on the right track with a 9.0 compression ratio. To meet those goals, you will definitely need MS, so you should be able to tune for pretty much any compression ratio available.

I think that's what I would do if my goals were that high. Personally, I just want a fun car to drive around, so I think 250-300 is a good range to be in. I want something fast, but still streetable. That kind of puts me on the fence between an srt setup and a forged setup. I can cheap out and still reliably meet my goals, but I'll lose some power when I'm not under boost, or I can pinch my pennies a while longer and bump my compression ratio up to 9 or maybe 10.5 assuming I can afford some dyno time and hit my goals pretty easily.

My build: verttuner.com (hosted on my blog)