Or more specifically, how many changes for how many days? Planning a 15 day out and back to my dads place, 700 miles rt. I'm betting 50-60 miles a day, and 2-3 at dads place then 6 days back-ish.

Won't need tent gear for this trip. But I will take tools, raingear, the necessities.

My question is this. How many basic sets of cycling clothing is a good idea? shorts/socks/jerseys? I can laundry when I make dads place and I'll bring some street clothes, of course.
Assuming hot and humid with possible rain.

Thank you