We will be going right after you guys! Ya make sure you bring lots of bug spray and bring head nets for your whole family. Bugs might be bad this year, usually that is a perfect time to go, but this year it might be worse. Bring sun shade for your boat and camp, it gets hot! Especially for you Montanians who isn't used to heat
Freeze some water in drinking containers for cold water, you will be going through a lot of drinking water due to heat. Bring water guns, a great way to cool off for the kids.
Another fun activity for the kids is black light flash lights to find bugs and scorpions at night. I found them cheap on ebay.
Make sure you scout Joe Hutch rapid.