Since you've already got some 50#x120', I'd suggest 90#x80', 90#x120', and a short 50#x50'!! Would let you fly with others (90#x120'), have a set that gives you some room (90#x80'), and a short set if you have limited room or light winds (50#x50')!! Plus the 90# will handle the stronger breezes easily!!! Anything else is up to your own discretion!!
Having the JB std and vented will let you play in almost every wind condition!!! Good move getting all the frames - adds even more flexibility to your setup!! Enjoy!!!
PS: I'd stick with LPG or Shanti for my lines!!
Thanks for the suggestions. My fat old fingers and hunt and peck typing have again betrayed me. The 50/120 should have read 90/120. So I have already followed one of your suggestions. You are also saying that 90# should be my standard except for the specialist light stuff at about 50#. And that 80' is a very useful length for (wash my mouth out) playing with myself. With possibly a shorter set for the occasional lash out or tricking. All sounds reasonable. So maybe I should get some 90" bulk line and make up a few sets to length. Rummaging through the old stuff I found some spools of #80 spectra -brand unknown but maybe Bainbridge - (used for dual liners). Is that a useful line - weight or should I save that for the 2 liners.
Glad my plans for a JB std and a vented seem like the most flexible and appropriate for my flying style. I am already enjoying the std. Good to be back flying Revs. Thanks. William