So long as you feel comfortable in doing soI can out a few in with my ducks, but not forever. I also have mobile pens that I could use, to move around my yard in the day time, and then a kennel to keep them in at night if I had to keep them as adults.

Unfortunately with as many as we hatch, we do encounter a couple chicks that do need to be humanely culled. Another thing to be prepared to do if you encounter any deformities or notice any sickly/ill chicks. It does happen unfortunately and it always breaks my heart, but it is a responsibility we must take on.
Any breeds you had in mind? I currently sell Easter eggers and Barnyard mixes.