Hello, I just got an interesting offer and I'm not sure quite what to do. I've always been interesting in theoretical physics, but I've been doing some cosmological simulation research this summer and my advisor was impressed with my work enough to offer me a position as a grad student at my current UG university. The timing is right so to speak with him insofar as he has a position available next year after I graduate, he needs someone to fill the role of his leaving postdoc, and him and I get along great. He is a distinguished professor at my school, which is probably ranked top 200 in the world (I guess that's good?) and this would be a great way to springboard into a future of doing these types of astrophysical simulations. He basically guarantees 7 or 8 papers by the time I get my Master's degree, which would then let me do a PhD much faster (in about 4 years post UG). The only problem I see with this is the content of the research, I still think I'm much more interested in doing the theoretical side of things than the experimental. The opportunity is fantastic which would let me get into an interesting, competitive field in an area not yet quite explored. My only question for your opinions is whether or not the theoretical route would be worth pursuing as opposed to this. In this case I'm basically being handed a PhD and publications, whereas theoretical would require a lot more work and dedication. My graduating GPA will be enough to get into a good school I think (definitely 3.5+ I'm not sure the exact number), but I don't know if that's even good enough for theoretical and what the job prospects are like there. Maybe theoretical physics is more of a hobby for me? I just know one day I want to study QFT no matter what I do, even if it is on my own. Any advice or questions I'd love to hear!