I was in a very similar position. My IELTS score was L=8, R=9, W=7.5, S=8.5. I was stuck at 439 for over 6 months (since early this year), and thought the CRS might drop below 439 based on what happened last year, so I didn't retake IELTS to increase 3 points (Listening). However, I regret this decision because CRS never dropped below 440 and I just turned 30 a couple of months ago, and my score dropped to 434. (I couldn't retake it close to my birthday because I was on an assignment overseas and didn't have any free time at all).
Finally, my spouse retook IELTS, and now we're in a good spot because she has a masters.
The big difference between me and you however is that I had a chance to increase my CRS by only 3 points, however, I believe you can increase by 9 points, since your L, R, W are all not maxed out.
I would say it depends on the following factors:
1. Will you be losing points for age any time soon?
This is a no-brainer, if you will lose points soon, just retake it.
2. What is the potential for improvement?
9 points is a very big improvement. Even if you improve by 6 points, you're safe quite soon.
3. How will the cutoffs look in the future
I think the cutoff won't drop to 440 immediately (2-3 months). With projected intakes to increase next year, it seems that 441 will hit sooner or later. However, there is an election in 2019 I believe, and who knows what will happen to the EE intake after that.
4. How soon do you need to move?
If you need to move very soon, 441 doesn't look very safe, so retake it.
Lastly, I'm no expert, I'm just speaking from personal experience.
Good luck!