Osprey Farpoint 40 vs Kestrel 38

Hey guys! im (20M) walking the camino in two weeks and am still building my packing list, but I've narrowed my bag search to two bags. I can't decide between the Osprey Farpoint 40 or the Osprey Kestrel 38. Farpoint was voted one of the best on oneBag, but the kestral is more of a traditional backpacking ruckpack. Totally 50/50 on these, any recs would be great thanks! Also not sure if this is the right sub for gear recs but thought i would try :)