If it's not causing problems, don't sweat it. If you want to change the way you crochet, terrific! It sounds like you're doing that. Anyhow, if it works then it's right and if you like the result, it's right, do what you want. I think you've been crocheting long enough to choose how you do it and if someone says it's wrong, tell them they aren't the crochet police.
I should never overestimate my basic arithmetic skills.