it is getting late. if you have lots of bees and drawn comb put your existing queen into a 2 story nuc box with about 5 frames of bees and brood. a frame of honey/pollen and 4 drawn out frames on top and feed slow and steady [mason jar on top], be ready to go to 2 deeps soon. let the strong hive raise a new queen... the 2 deeps for the new hive will be needed in 2 or3 weeks and should include 10 more drawn out frames. of course you can convert to deep equivelents, but I bet deep frames would work better here. winter is coming and you want at least 2 full deeps for winter. later go to a tank type top feeder to fill up for winter. it is late to raise a queen in a new nuc and be ready for winter...if you have a tons and tons of bees and brood, then start a smaller second queenless nuc just as a back up plan for a queen for the main hive. you are not going to have much luck trying to start a queen in sept. where you are if things do not go well.