Accept rejected offer in economic consultingCO
I'm a senior who recently accepted an offer for an M&A analyst position at an IB. I received two offers during the recruiting season, the IB analyst position, and an analyst position at a top economic consulting firm, and I'm starting to think that I did not make the right decision. I will be making more money at the IB, but I believe that I fit better at the econ consulting firm, since I have entertained the possibility of getting a PhD in economics, and because I think the job is more quantitative and intellectually interesting (was a math major). In addition, I'm kind of an academic (i.e. nerdy) and would mb have a better personal experience.
My questions are:
1. Since I rejected the econ consulting position, is it at all possible to call them back and get the offer again?
2. Would it be possible to do the IB stint for two years and return to the econ consulting firm?
3. Can I go to a PhD program in econ w/ only IB experience?
I'd also appreciate feedback on whether or not it's a good idea to even make the switch, since M&A is so highly sought after. Thanks.