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Do you mean the SW102? 102mm diamter, 500mm focal length?
A good 2 inch quartz diagonal will probably be optically much better than the 1.25 in diagonal you have now.
You can keep it and use it on any future refractors or folded optic reflectors - cassegrain, schmidt cassegrain or maksutov style telescopes.
A 30-32mm 80-82 deg eyepiece will give you a field of almost 5 degrees with a 6.2mm exit pupil. The matching eyepieces are a much bigger investment. There are cheap wide angle 30mm eyepieces around that are not very good quality.
At one end of the spectrum, a new Nagler V 31mm will set you back most of $1000.
Andrews used to sell a 30mm 80 degree eyepiece for $79. They no longer stock it. I've heard that these eyepieces don't perform well in short f ratio newtonians. I haven't tried mine in a short newt. I have used mine in a William Optics 70mmf6 and Skywatcher ED80 f7.5 refractors and in 8 inch cass and a 12 inch Meade Schmidt cassegrain and it works very well in all these classes of longer focal ratio instrument.
I can't recommend a current cheap 32mm wide angle eyepiece that gives reasonable performance. Perhaps someone else can chip in with a recommendation.
Go to an astro club field night and ask someone if you can try a 2 inch diagonal and wide field eyepiece before you buy.
Good luck
Joe
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