Birth of a 1970 Dart Convertible

Hope you guys can help me out a little. It has took a long time, hard times and money to get to this point. I don't want to screw it up now. I got X heads and 20-600-4 thumper cam with the springs Comp recommends 995-16. It says the spring height should be 1.70 @ 116 lbs I got a spring height of 1.60 @ 137 lbs. I talk to Comp yesterday they said it should be ok with 1.5 rockers and the coil bind should just be a little over .100. I have a set of 273 adjustable rockers. They also said there is some valve locks that will give me + .050. This is where I'm at.
Jim