Coolant flush/ change

Hi guys I’m new here and I’ve recently pick up a 2017 GSXR750 with 4000 miles and just got done doing a coolant flush and change. I flushed the cooling system with about a gallon and half distilled water (the old coolant really wasn’t dirty at all come to find out it was blue if that matters) and I replaced it with roughly a 1/2 gallon of engine ice is all that would fit is that normal? And when just idling in my driveway at 65 f outside it will still get up to 220 and have the fan kick on and go down to about 210 Is that normal? Or should it not go that high?