Spokane WA

Will be spending a few days near Spokane on our way to the Olympic peninsula so looking for an RV park. We generally like FH, pulling a 35' 5th Wheel. Also wanting to do some kayaking while in the area. Since we are beginners at kayaking and have a 2 person inflatable we are looking for something fairly tame. Will be looking to do kayaking throughout WA and OR. Likely go south out of Spokane to tour the Palouse then to Mt rainier. TIA