Advice: Bloomberg vs. Big Four

Hi all! Long story short, I have a degree in physics/chemistry from college and recently decided not to pursue the science path. Just graduated and don't have finance experience. I recently got offers from Bloomberg and a big four firm, here's where I need help:

option 1) data researcher/analyst at bloomberg, temporary job (6 months), decent pay, full benefits, apparently good chances of becoming a permanent job, great culture, minimum 10 hour days, relatively back office position

option 2) graduate program for tax or audit at a big four firm, much lower pay but is a permanent job (full benefits), in general 12+ hour days

I know both are quite different so i'd appreciate some advice and opinions. I'll be honest and say I do not have a strong finance background, perhaps I interview well enough for them to overlook that problem. I am hoping to go into finance/possibly banking in the future. Thoroughly enjoy analyzing data, interest in investments, don't mind facing clients but would prefer not to do it on a day-to-day basis, current pay isn't really a big factor - more interested in prospects and outlook. So my questions are:

1) which job would give me more options in the future
2) which would be a better 'stepping stone' into banking/i-banking
3) what are the career prospects/outlook in the long-run for these positions
4) any other advice, why choose one over another

Appreciate any help I can get, thanks in advance!