change of setup
If anything, Id stay with that camshaft you have now...as it looks like your getting almost 400RWHP with it and spray 200 on top of that. If your dead set on driving/idleing more stock, swap it out with a camshaft on a wider LSA, such as a 115 or so. That will not idle as rough/radical and help with less overlap which the nitrous will like.

