If you can’t move the saddle forward enough, I would be very hesitant to try this - moving your torso lower will close your hip angle and hobble you on the run.
The best solution is to get a used tri bike and smoke everyone on a cheap bike. I was never able to ride a converted road bike well, but a well-fitted TT bike is great and handles better than everyone assumes. It does take practice, but if an idiot like me can manage...