There are are lot of great resources found on the internet, it is going to take determination to find the answers you want because this is not a widely discussed topic. To become established in any industry it will also take a bit of ingenuity. Learn how to raise superworms before you try to raise on any scale larger than personal use, your chances of success are far greater if you go in that order. Raising bugs or anything for that matter seems easy on paper but in real life there are hundreds of things that will go wrong, they will only cost you more money, and you won't have product to recoup costs because of the hickups. So start slow, babies are not born big for many reasons
Sifting takes a lot of ingenuity friend, mechanical might I add. Or drop in front/behind of a large fan, the large supers fall out of the wheat bran and the wheat bran will blow away, best to set this up outside obviously (just the fan, you can drop them indoors with the fan blowing out the window). I also suggest figuring out a way to pre-sift before you do this step. You need to be creative, no one is going to share their secrets
CJ