Basically, I took it into Astro Pixel Processor to very selectively remove the light pollution. I was careful not to select any nebulosity while removing the LP. Then I color corrected the background to neutral gray, and then finally color corrected the stars. I prefer APP's LP and color correction tools to PixInsight, so prefer to do that here.
Took it into PixInsight at this point, and did a stretch using the screen transfer function. Which I don't usually use, but was being lazy. I usually use Masked stretch. I then created a star mask to protect all the stars, but didn't get it set quite enough to protect the largest star and it's halo. I further stretched using curves transformation with the star mask applied to bring out more nebulosity and increase the contrast. Finally I extracted a grayscale version of the image, and applied it as a mask to then use the same curves transformation tool to increase saturation without affecting the darker background. I might have also done some deconvolution or sharpening, but your image looks pretty good focus wise, and seeing must have been decent.
Antares is a very bright star, and your halos are only on that star. Removing the LP filter will get rid of the halo (since it's a reflection off the filter). Since you do have a fair amount of LP, the main thing is just not imaging so much that the LP saturates your frame covering the faint nebulosity. You'll still want the same amount of total integration time, but with shorter subs, you don't risk saturating your frames with the LP. Additionally, all LP filters remove some signal from your color images, so you might find that you get better color reproduction without the filter in place.