My golden rule about buying bike gear for 99% of triathlons is, compared to aerodynamics: "Weight don't matter shit".
Instead of spending the $$$ to reduce weight, why not try to spend your cash trying to reduce drag? In terms of dollars per second saved, I'll wager you'll get 5-10 times better value for money. Weight can even go up in order to reduce drag, and it would still be a big time-saving. Try comparing the speed benefits of a $500 aero front wheel over a $500 super light carbon crankset.
Instead of spending the $$$ to reduce weight, why not try to spend your cash trying to reduce drag? In terms of dollars per second saved, I'll wager you'll get 5-10 times better value for money. Weight can even go up in order to reduce drag, and it would still be a big time-saving. Try comparing the speed benefits of a $500 aero front wheel over a $500 super light carbon crankset.