rocker arm ratio

[k-20]

gady,just curios about rocker ratio's,in the process of building a new 350,its bored 30" over, flat tops,going for a set of edelbrock performer rpm heads(64cc=10.5-1 comp' ratio) weiand stealth d/plane intake 750 d/pumper,so now im in the market for a set of roller rockers,but do i go for std ratio of 1.5 or change to 1.6 ratio?? not sure what the specs of the cam shaft are but its nothing huge,only mild,any advece would be great,thanks.