Hello. I'm trying to plan a road trip from Topeka, KS to Seattle, WA, but I don't know the roads very well. I've taken a few road trips before, but this will also be longer than the other ones. The trip will be in mid-September. I will have four days, five in an emergency, to make it from Topeka to Seattle. I'd rather pick a route first and then pick a few stops along the way. Google Maps recommends taking either I-80 and I-84 or I-70 and I-84. Any suggestions? Thank you very much!