Don’t overweight the essay score. It’s becoming less and less meaningful, and never really was anywhere near as important as the actual test score.
Your 33 is from rounding up a 32.5, vs. a concorded 34 on the SAT. You’d need to pick up 4 points just to make them equivalent. A superscore means you’ve taken it at least twice, so significant improvement is unlikely. And some schools don’t superscore.
I don’t see a reason to invest in further ACT testing.