It sounds like you may be falling victim to a well-known phenomenon called “The Fallacy of Sunk Costs”. It is very common, and very problematic. Here is an example of what that means, if you are not familiar with it.
The “sunk cost fallacy” is when we continue an action because of our past decisions (time, money, resources) rather than a rational choice of what will maximise our utility at this present time. (Cite: Sunk Cost Fallacy - Economics Help
Taking everything you have written at face value, PLEASE consider staying where you are and not even submitting your transfer applications. The “sunk costs” of time and energy in writing applications is just that – a sunk cost that you should ignore because it will not help you gain the future that you want. (Actually, any improved skills you developed are a benefit that will serve you well in the future, so it is not entirely a wasted endeavor).
The academic-research world is small and people will talk about what appears to be your short-sighted (and potentially self-serving) choices. Stay where you are, don’t tell anyone about your wish to leave and do really well at UMich. You will very likely NOT get these same opportunities elsewhere and you are already developing a stellar record at UMich. Ride that for a few years and then you should have a great chance anywhere at all that you want to go for grad school.
If you apply to transfer now, you will very likely not get in to your desired schools AND you will very likely significantly damage your reputation where you are, unless you are completely transparent with your current PI – and possibly do damage to yourself even if you are transparent. That’s because your success in getting the new grants has catapulted you above and beyond what is expected for a typical undergraduate, so you will very likely be judged by standards that are typically applied to grad students, and your desire to transfer for prestige will not be well-received.