Great Internship vs Permanent Full time contract

Context:

- 22 yo

- Graduating in MSc Management in top tier university nationally

- Currently in another city paying rent and all the expenses on my own ;(

Hey there,

I am currently a business analyst intern in a leading FMCG company in the sales department, with as tutor the Commerical Director of the national branch, and this of course allows me to learn a lot strategy-wise because I passively take part in all top decisions stages. Despite the few months since my internship started I have figured out that office life does not suit me, I have always considered consulting as the industry I would like to work in, and, as many do, I have never excluded working at BB. A few days ago I received a full-time contract as a FT at a BB in the Commercial credit division, availability immediate. Right now I am completely disoriented because, on one hand, I would like to try to apply for MBB  soon with a possible referral letter from my tutor (which I would not get if I abruptly interrupt my internship), on the other hand, I have in front of me a permanent contract with triple the salary I earn now and the possibility to move in other divisions internally in the future at BB (IB, DCM, etc.). Do you have any suggestions on what other criteria I should take into consideration?