Using 16 T25's and T100's if its a 10 handed game does not leave any T100's to color up the T25's once they're off the table for those with low T25 stacks.Why not do 16/16/4/6 or 16/16/6/5?
I'm all for MOAR chips on the table, but in building my tournament sets, I'm finding that I'd like to have a few extra T100's for color ups. I won't be able to use the T500's to color everyone up.
If we're talking about a freezeout, your breakdown works just fine.