Holley Tuning Help

to your answer on the cam needing to idle that high I would say yes ,I have used cams like yours in short track engines, with high compression before and they all idled at 1000rpm or more. If you look at the tune up specks from 60's engines like yours with big cams 302/290-350/350-ford 302 boss/290 they all idled at 950/with man. trans. and this was before emissions came in!