Skimmer question

[slough shark]

Need a little pro, unbiased help.
Am fairly new to the hobby and trying to do as much research and planning as possible, however, I’ve made a mistake and now am trying to figure out a way to correct it.
I’ve got a 120 gal SW set up with 150lbs LR that has been cycling for about 2 weeks now. A 2” overflow down to the 33gal sump, through a few baffles, into my Coralife 220 super skimmer, then over another baffle into the third chamber, where there is a mag 9.5 return up a ¾” pipe.
My second chamber houses this super skimmer where my problem lies. I hate this skimmer and due to some poor planning in the beginning I rushed out and bought this thing used off of kijiji and figured it was a decent unit. I would like to upgrade my skimmer to a good unit but not sure if I have the room. Can anyone recommend a decent skimmer with a similar footprint to the super skimmer.
Any help would be much appreciated.