Nice. I was curious on how adventuresome you were planning to be.
Highway 97 can get really busy - lot's of trucks and throw in lot's of RV's on weekends. Generally OK shoulder but there are skinny spots. Mid-week is better if you can manage. The Old Blewett route is fun. You can get off of 970 even before Teanaway Rd. by turning right at Swauk Prarie Rd. and following that to Ballard Hill Rd. to Teanaway Rd. It's gravel but decent gravel and quite nice compared to riding on the Highway.