I have two similar outfits, Fox Ranger shorts and Club Ride Go Long Shirts, which look just like normal shirts but dry really quick. I'll wear one set during the day for a few days and the other in the evening as my clean outfit. Then I can swap them while washing the "smelly" set. I do break the rules by wearing underwear under my liner shorts, that way I can wear them for a few days too. Merino thermals for if it gets cold of an evening and a thin down jacket. A rain shell. So I carry a few pairs of socks and jocks to get me through 4 days or so.