If you're planning on going the DOB route, no N/A modification will be of benefit, as you're limited at 450rwhp by the stock rods. If you throw in forged rods and pistons, certain mods will be beneficial. Jason has a pretty good write up on this on the DOB website.
I'm currently piecing together a DOB kit myself, and I wish I'd went that route first. I'd have saved a lot of money and would already have it on my car.
My mods are: JLT Series 3 CAI, Steeda UDPs, DIY CMDPs, Brenspeed SCT X4 tuning, off road H, and Barton short throw shifter. Odds are, the shifter and catless exhaust is all that's going to transfer when I go FI.
Keep in mind, no N/A mod I list will change the fact that you'll have 450rwhp with the DOB kit unless you throw in forged internals.
Cams: N/A cams don't do well with FI and FI cams can't be run safely N/A. Mild NSR cams can ride the middle ground and give some rumble, but you're spending 1/4 of the DOB kit to pick up 10hp.
Headers: will pick up a small amount N/A (10-20whp), but again you're spending 1/4 of the DOB kit. Down the road, headers will add heat to the engine compartment moreso than stock manifolds, so they may actually hurt at the 450rwhp level with the DOB kit. If you have forged internals and are aiming for the 575rwhp realm, headers aren't a bad idea as they'll flow better and make power at less boost (allows you to stay on pump gas easier).
CMDP: DOB eliminates the CMCV system, so you'll be pulling these back off.
Underdrive pulleys: May or may not be usable at the 450rwhp level. I'm going to contact Jason (DOB) to see if I can run it with my Steeda UDPs.
Cold Air Intake: You guessed it, doesn't transfer with the SC.
Aluminum driveshaft: picks up about 5rwhp N/A, but you guessed it, 1/4 of the DOB kit and stock rods still keep you limited to 450rwhp.