I apologize for this long of a post, but there's a lot to consider...
I've recently been offered a significant promotion at my job in finance, where I've been working for the past year. This promotion is not to the supervisor level, but it's close. This is my first job out of college, and my boss has hinted that he sees me growing into a leadership position at my company. I enjoy this job most of the time, but I don't think that I could really reach my full potential at this company. The work is challenging, but it's really only challenging because of the sheer amount of work that needs to be done, and I'm not getting the kind of experience that would be very valuable in the workplace. I really don't see myself working at this company for more than 3-4 years, but I would definitely like to have some experience in the position I've been offered, primarily since I think it would help me stand out in the workforce.
On the other hand, I know that I definitely want to pursue a PhD in Economics. I am very interested in the subject, and I know that that's what I want to be doing with my life. I've taken the GRE, and I got a 163 on the quant (158 in verbal and 3.0 in writing). Additionally, I worked with the head of the Economics department to write my undergrad senior thesis, and I'm fairly certain that this professor would write a decent recommendation for me if I apply to programs for the fall of 2017. I'm less certain that he would write this recommendation if I delay my application until the fall of 2018; he's a very busy person and it's possible that he might not remember me for that long.
So, basically, I'm trying to decide between not taking this new position at my company and applying to grad school for fall 2017, or taking this new position and applying for fall 2018. I'm fairly new to the workforce, so I'm not sure how lucky I am to be offered this position. I'm really torn between these choices and I'm worried that I will either get stuck at a job which I don't find very rewarding or miss out on a chance to prove that I can handle a leadership position. Any advice would be appreciated!