I just looked over your combo and you forgot the most important thing a drag 318 setup needs
Amazon.com: NOS 07001 Sniper Nitrous Kit: Automotive
With all the recommendations from fellow fabo members and some laughing gas you should be able to get into low 12s
100 shot of nos = about 75 hp and 150 -175 ft lbs. Can you say big block torque from your 318