Opinion: If you live on the flatter side of NJ, remove the RD & FD, pick a gear combo that you like, and shorten the chain and try it as a SS for 3-6 rides. If you like that kind of cycling, then bother with the expense of a having the rear wheel converted to FG or SS.
In this case you would only be out the cost of a chain, which after 22 years probably needs replacing anyway. Your most cost effective solution would be to tune up and ride, but if you don't think you will because of the CF wonder you have, then why waste the dollars. Try something new. FG/SS might not be for you for either personal or practical reasons.
Best of luck!
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Bob
Enjoying the GA coast all year long!
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