Zipps are great but if you're not racing you might want to consider carbon clinchers instead of tubulars. Much easier to deal with and a pretty negligible weight difference. Also, there are other manufacturers that make comparable wheelsets for much less than what Zipps will cost you. Psimet and Williams are very popular here.

Of course someone will be along shortly to tell you how you should work on the engine and that expensive wheels are a waste if you're not at least a Cat 3 or something along those lines.