I would use the lighter line (65#) and make sure my connections were strong so that I had the added capacity. You could splice 5 yards of hollow on top (http://www.360tuna.com/forum/f3/glueless-solid-hollow-spectra-splice-full-strength-4389/) and splice an end loop in the hollow, then you could use windon leaders with a short splice. If you took those steps your setup would be as strong as those who use 80# braid and tie knots and you'd have most of the benefits of a knotless system.
I used 80lb tuftline not sure if it was plus or xp, but I got alot of wind knots, a heads up. Think it might be b/c tuftline is a bit hollow and does not have enough density.