Splits and queen rearing

Hey everyone. I plan on making a few splits next season and having a go at rearing my own queens. Just wondering if anyone has had much experience with this here, what methods they have used, how successful it was, and when in the season they tried.

My plan is to make a few walk away splits in September, and then try to raise a few queens using the Nicot system for a few more splits maybe in October/November.