1.5 vs 1.6 rockers?

la318 built up, 0 decked .30+pistons, #302 casting heads, ported, msd, 100 shot nos. 8 qt oiling system. arp bottom end. has a a904 lock up(hwy).. 3:55 gear with 28" tall rear tires.
mopar perf. resto 340 cam and lifters....... what are any of you guys recommendations for rocker arm ratios.... 1.5's or 1.6's ? has anyone done it with this cam combo?
daily drier and or play toy...