Personally I don't think that combination warrants the expense of roller rockers. What you have there is not much more than a stock rebuild. A quality stamped rocker or a nodular iron rocker would be a better and cheaper choice. This will also pretty much limit you to 1.5's. The 1.6 will increase lift but you should have thought of that when you bought the cam. Also, are the valve springs you have rated for the additional lift or are they pretty much at there limit for that cam? If its a performance gain you're after I can think of much better ways to spend that money.

It will no doubt illicit comments from the naysayers on here but higher ratio rockers are best suited when you're at the limits of your cam i.e. you have the biggest hydraulic made but want more valve lift out of it, you have the biggest solid made but want more valve lift out of it or you have the biggest cam that will fit in the hole and you want more out of it. Otherwise they're just a bandaid or diagnostic tool.