Yeah, some childhood stuff would suck but you could probably skip a good few grades. As you already (hopefully) know how to socialize by now, a lot of the childhood friend stuff seems pretty optional.
Dating would be really tricky through the early teenage years as I don’t know how I’d feel about girls my own physical age at that point.
Because I’m relatively older and would have insane future knowledge, I could absolutely rock in stocks and have enough money to actually effect change. (Eg, singelhandedly fund a massive Democrat turnout machine in the rustbelt for 2016.)
The hard part would be somehow connecting with my current group of friends whom I love to death and wouldn’t want to lose. They are the only thing that makes the blue pill tempting.