I have arrived at the following routine as regards supering, without using excluders. Granted, it's not perfect, but I am pleased with the consistent results I'm getting. Upon reversing the position of the two brood chambers in late April - early May, I add the first 6 5/8" honey super, with 8 combs evenly spaced. I add no more supers until there is a honey barrier across this super. This happens soon enough. In some colonies the queen will go up and lay some eggs in the honey super, but by the time she does it usually contains a fair bit of honey above as she has been kept occupied by the space in the two brood chambers. Once there is a layer of honey in that first super I can add two at a time above it, without worrying about the queen going up there. What becomes of the brood that sometimes occupies part of the first super? Well eventually, certainly by the fall flow, the brood nest is pushed back down by the nectar storage and this super is harvested, free of brood. I like this approach much better than the excluder practice I used for many years. The bees "take" to the first super right away instead sulking under the excluder, clogging the brood chambers and getting so swarmy. On the other hand, if I have hived swarms or new nucs and a good flow on, I keep them on one brood box and use an excluder under the supers. Then they receive a second brood chamber for winter stores later, to be filled (ideally) on the fall nectar sources. BTW, revisiting the 8-frame idea, I don't understand what drawback there could possibly be to increased wax content of the harvest. It's a bonus! Wax is valuable, after all, and the bees of a certain age have a propensity to produce wax anyway, as a response to incoming nectar. (Somewhere I read that the wax scales are just discarded if not used, and that seems a waste.) This comb building could also do much to lessen their desire to swarm. Top supering seems most efficient overall and easiest.