----- Original Message -----
Welcome to the club, cooling appears to always be the
first item of business. I can not quantify the differences those
changes you propose would make.
However, a 50/50 coolant mixture has a 40% lower
specific heat than pure water alone. Meaning it will not carry as much
heat away at the same coolant temperature. Would pure water give you
40% more cooling - I personally doubt it, would it help, I believe it
certainly would.