Might go R series Kef for the LX85.Listened toR500/200c/XQ60 sub today...pretty darn good! Oh and T101's for surrounds,not too sure about them though.
I foresee one problem though. The Pioneer has a single crossover point, which means you'll have to cross all of your speakers over at the same crossover point, which is usually based on the 'weakest' speaker. In this case, it'd be the T101. This means you'll probably be setting it to something like 100Hz, which is feasible, but itI suspect you'll want to cross over the R's lower than that. At least with the R100's as markjaspi recommends, you can then set it to 80 or 70.
Of course, you can set your R500's to large, which means they'll be sent a full range signal, but I'm not an advocate of that practice myself.