The 30mm GSO superview is a reasonably good eyepiece. I had the 50mm for a while and it was tack sharp at F/10, with very good contrast and transmission. 30mm should be about the same.
Basically it would upgrade your current 32mm Plossl from a 52 degree AFOV to a 68 degree AFOV, and from a ~1.3 degree field of view to a ~1.6 degree field of view. If you wanted to go wider than that, you'd need to get into the ~80 degree AFOV territory.
The 42mm SuperView will give you a slightly wider ~2 degree FoV, but the AFOV gets narrower (58 degrees, just barely wider than your plossl). The large 7mm exit pupil may also be undesirable if you don't live under very dark skies.
If you really want wider fields then a roughly 30mm 80-82 degree class eyepiece will be the best option. Cheap ones like the generic Barsta 30mm 80 degree might do ok, but I've not looked through one so can't say what the contrast is like.
Fun fact though, the 20mm in that series is the same as the 30mm, but with a removeable 1.5x barlow. If you're willing to take the chance, you could get the 20mm and then effectively have two eyepieces for the price of one (20mm and 30mm), PLUS a 1.5x barlow to use with other 2" eyepieces in the future. Amazon has a generous return policy so you might be able to take the chance and try it out. If you like it, keep it. If you find it looks like trash, return it.
I have a 8" Celestron SCT I picked up used. It came well equipped except for eyepieces, it only had a 25mm plossl. I ordered the Celestron set, but based on your posts here and in other threads I'm thinking I should return those and get this set, unless you suggest something different.
My pockets are not super deep, but I would go up to ~$200 for a decent set. Maybe a bit higher if I could find a 2" set, but I am doubting that will be in my price range.
Edit: I definitely want at least one wider field eyepiece, so if I got that set I was to get that set, would this be a good choice for a wide field option?