Share 'Spare wheelset recommendations, big rider (2 bills)'

Hey guys, I' like to get a spare wheelset for the CX season, and to use there after on the road, etc. and I need some advice.  I'm 200lbs, Cat 4, and I need to keep this wheelset cheap, ie, a used set but I'll need disc hubs plus I'm running tubeless.  I have not seen much discussion on wheels for the big guys, so what are some recommendations?       thanks mucho, Nathan