B33 sure is a fun object - to hunt, and then to finally see.
As others have said, you do not need 2" EPs or filters. In fact, a wide view will often include Alnitak, which I find a bit distracting and which is the reason I prefer Plössls or Abbe orthos for this particular target. Any eyepieces with modern coatings and/or little glass will help though. So will clean mirrors.
For your interest, I saw the object
without filter through 8" a few years ago and again with a 12" dob last month observing at 1,000m asl, also no filter. Having been to the Blue Mountains, I think it's doable from there too. Perhaps try that before spending the big dollars on a one-trick pony (see what I did there) filter...