Should I retake the SAT or ACT?

Hi I just got back my ACT and SAT score and I’m not sure which standardized test I should retake. I don’t want to study for both tests when I can just focus more time studying for one. I took the March 2019 SAT and the February 2019 ACT (state wide). I prepped for the SAT a bit by going over some strategies, using Khan Academy and taking a practice test but I didn’t prepare for the ACT at all (I only knew how long each section was and I didn’t even know what ACT questions looked like). My scores are the following:

SAT
-R&W: 590
-Math: 600
-Total Score: 1190
-Essay: 15/24 (R: 5, A: 4, W: 6)

ACT
-Math: 25
-Science: 24
-English: 23
-Reading: 21
-Writing: 8
-Composite: 23

When I conversion table my scores are similar so I’m just not sure which one would be easier to improve.

IMO it’s easier to bring your SAT score up because of how fast you can bring up your math score with some prep. While you can do the same for the ACT, it would have a lesser effect on the composite score.