Just some more food for thought that you might already had considered.
Look at MegaSquirt for the computer if you haven't already. Since you have had the Haltech in there it would be very easy to convert over.
You say the top has been chopped 3 inches. Have you taken the maximum benifit of the rules for the "lay back" of 7 inches at a 5 inch height. I believe those are the numbers, but I'm not sure you guys are completly following SCTA rules. It also looks like it could still be chopped more and still be within the rules, but maybe you are out of head room.
On the subject of head room do you have enough with the driver in a suit and with the right helmet on??? I can't tell for sure from the picture, are you using a roof exit??
Ok here are some major mods. Have you considered cutting the front right behind the front wheelwell and extending the front say maybe 12-14 inches. You would just have to bend a filler piece to to do that.
Is the motor as low as possible to get that blower and intake tract as low as it can be. You might want to look at the way John made the air inlet for the blower on Hooley's Stude (it is in the 2005 construction pages on my site). This has worked very well for us and I think it helps with the streamlining ahead of the windshield and would be legal for you as you are allowed streamlining ahead of and including the cowl. Then negative is that it moves the "center of pressure" forward, that is the reason I suggested stretching the car some in the front as that would help to offset that by moving the "center of gravity" forward as you could maybe move the motor ahead a little and would give you room for weight ahead of the motor.
Also look at the construction of Hooley's car for I think 2006 for some ideas on jacking points.
You probably already have the 6-71 (its in the picture), but an 8-71 would help to keep the temps down on the air, but better still would be turbos, but you probably are well aware of that. We are looking at water injection for next year as a "crutch" since we will have to turn the boost up from 8 lbs. to about 14 if we hope to go any faster and like you from 10% underdriven to 10% overdriven (this worries me).
If the final ride height was 1 inch and you had plenty of adjustability in the car's ride height as you add weight you might be fine. Me I would probably like to see 1 1/2 to 2 with the front air dam on the ground.
Will the car get a belly pan?? How heavy do you plan to be and what is the weight distribution. I would look for #3500 to start with and 50-52% on the front.
Also I would put the biggest (longest - Flat) spoiler the rules allow so you could add the largest spill plates to it that the rules allow. I can't see the back of the car well in the picture, but it looks like a 10 inch long flat spoiler right off the back deck is possible and that would allow the top spill plate (8 inches high) to start at the rear axle and go to 2 inches behind the spoiler. That would really help move the center of pressure rearwards and help to offset the blower situation up front.
Well good luck with the car and I look forward to seeing it when I finally get over there,
Sum