I agree with jonnythan that it won't hurt anything, however I disagree about he wants to put the settings on. Just to preface this, I'm only offering an alternate solution based on my own personal preferences and advice I've been given. You should try both and see which you like better.
I would actually bump the center to 80, put the floor standers on 40 or 60 and then use 80 again on the P162s.
This keeps all the speakers operating well within their operating ranges (leaving plenty of cushion). I've been told you really want to cross about an octave above what the low end of their measures are. The measures I'm recommending aren't an octave, but are about halfway there which should be fine with room gain.
The issue with what I'm suggesting is that you may lose a little mid bass detail and punch since you only have one sub and it isn't great. If you find that happening switching the fronts back to full band would probably solve that.
Again it's all preference between my suggestion and jonny's, give 'em a try and see what happens