Before spend big bucks on EPOs I'd do the basics. Tighten up the tramp, rake the mast back, replace any marginal lines and hardware, check and repair any wear or divits on the hulls. Do the rudders hum? Clean up the leading and trailing edges. Set up a good jib traveler system. Are the sails in good shape?

Go sailing. If you can find someone to race, see who's got a clear advantage. If you don't do some more tuning.