I'd say B. Your educational path compliments the family opportunity you're being offered. For me, the trick was getting into my career field full time before finishing my degree. It gave me a distinct edge when competing against those who graduated with me. Sounds like you have an opportunity to do this too.

Meh: Fun Shmun. What has been said is true to a degree, but I've found that balancing fun with smart planning and smart, hard work while youthful will provide more "fun" later in life, while protecting you from a lot of "un-fun." It's not particularly fun to look back at all the fun you had in your youth when you're older, under-funded, dreamed out, and opportunities to improve your situation are so much more scarce and harder to realize.

So ... it's up to you. Are you in the US? Where you live affects the potential impact of living a more "care-free" youth. The US isn't real kind to those who don't plan effectively for the future. Trust me on that, heh.

Planning is good, hard work is good, fun is good--and so are adaptation skills. Everything can change in a New York minute ....