I am glad to hear that you are still keen on Wharton; many admits each year were reapplicants.
A change of goal in and of itself is not a problem. The question is how it fits into the bigger picture of your intended career path and goal. If you can frame your position and argument well, then there is nothing wrong with being at a stage where you are transitioning.
Naturally, an abrupt transition from what was represented in a previous application may surprise some readers, but a good explanation that implictly or explicitly walks the reader through your decisionmaking process could help make clearer that you have a more solid and credible path ahead of you that you can truly realize. The key is not to seem "lost" or inclined to change career directions on a whim. Those who try to arrive at Wharton with ill-defined career directions or trajectories may risk being overwhelmed by the sheer opportunity and expanse of options Wharton offers. This can be a blessing, but also a dangerous curse for the person who is still discovering themselves and their desired career path.
As for nominal age, that is no problem. The question is how much professional experience do you have, and how is the experience relevant to your past and future.
While at 33 you would be older than the statistical mean age, there are plenty of people with 10+ years of full-year experience at Wharton every year.