With the nitrous you should be able to get in the 7's in the 1/8.
I would recommend a Fogger system. It is easier to get the cyl to cyl distribution right, but is more expensive. I have both a plate system, and a fogger system, and jetted at the same "advertised" HP rating, the fogger is quicker.
PS: My 66 Cuda is a full street legal type car minus exhaust. 170 cubes and weighs 3250 on the starting line. It will run low 8's in the 1/8 on 150 shot.