After a closer inspection of my standing rigging (thanks to Pete for the URLs--good info), I have decided to replace all of it before I put #66 back in the water. I was leaning in this direction anyway, since it looks like it is all original (40 years old).
I'm not too thrilled about roller furlers--seems to me to be just one more think to go wrong--and the cost certainly works against them too, given the amount of $$$ I need to put into #66.
So what about dual headstays? It seems to be a cheap way to make headsail changing easy; I could have the jib and genoa hanked-on all the time and just raise whichever one is better suited to the conditions at the time. If heavy weather is expected, just replace the genoa with a storm jib before casting off.