keneds
Room pic
Whoa! One speaker in a corner, one against the wall...that's a big problem right there. A speaker in a corner will boost bass significantly because ANYTHING radiated from the back, being a long wavelength, will bounce off the wall and reinforce what's coming off the front. The left side speaker with its back to the will have a similar problem but to a lesser degree. So right off the bat, you likely have too much bass, and your left and right channels are not symmetrical.
If you move your mixing table to the left several feet so it's more in the middle of the room, and move the speakers at least a foot (preferably more) away from the wall, you'll be in better shape.
I don't have a permanent studio yet since I relocated, but the mixing "deck" with the monitors etc. is about a third of the way toward the middle of the room, titled at a slight angle so the sound waves hit the wall at a slight angle; the speakers are in about 5 ft from the wall. If I don't turn them up too loud, there's not a lot of reflections. People who listen to what I've posted on my YouTube channel tell me the mixes translate well over just about anything, which of course is my primary goal.
The ARC system is, IMHO, the best of the artificial room correction devices. But like any kind of correction, it is most effective in situations that don't need huge amounts of correction. Take care of the basics first, like speaker placement as noted above, deadening the wall behind the speakers, putting a cloud above you, and bass traps in the corners. That will make a
huge difference. Then get a set of accurate (not sexy) headphones, like the KRK KNS-8400, and learn them so you have an alternate reality check.
If there is a good mastering suite within driving distance, tell them you want to book half an hour to listen to your music over a really good system. They might even let you do it for free so they can pitch you on mastering your stuff

Take note of how the music sounds different on your system compared to theirs so you have an idea of how you'll need to compensate in the future.
I worked with a mastering engineer in Nashville named Randy Kling, he had these $10,000 speakers that were off the hook. I brought in a CD for mastering and knew I was doing okay when it sounded like it did in my studio in terms of overall accuracy, other than a deficiency below 40 Hz that showed up with orchestral bass drums. Of course, his sounded a lot sweeter! But whether a speaker sounds "good" or not is not as important as whether it is accurate.