Seattle Area I-5 South to Carnation

Tom/Barb wrote:

CA Traveler wrote:
Seattle Area I-5 South to Carnation. What’s the best route 8/11 (Wednesday) midday, 42’ MH and toad? Rt 2 out of Everett to Monroe and 203 down or ?

Thanks

I-5 south then #2 to Monroe then 203 south.