I'm planning on using a 5 frame nuc size this spring. Definitely put frames in it. I'm going to put one frame in with some drawn comb on it, and the rest of the frames will be foundationless. 2013 was my first year with bees, and I have loved watching them build out comb on foundationless frames. It's cheaper than using foundation. It's cleaner and healthier for the bees. A swarm is in wax making mode and will draw frames out quickly.