Your plan is highly unfeasible.
I guess you could try transferring to Cornell Ilr/aem from a lac (because you’d be able to justify why you want to go there by the difference in majors and offerings) but that’s it in terms of possible (and I didn’t say likely).
You need actual reasons to transfer, and ‘Harvard is more prestigious and has a better rep on the Street’ is not it.
So, choose your college as if you were to spend four years there. Choose it because it’s a good fit and a good value, a place where you can see yourself spend four years.