NON-EU (Canadian) looking to study at Bocconi (mscfinance) and working London IB

I'm a 1st year in a BBA in Finance at a non-target (ESG-UQAM) with a GPA of 3.7/4.3 in Montréal, Canada. I already have done an extracurricular, between universities (a case resolution in finance) in which I placed 1st (in front of HEC Montréal, Mcgill, JMSB) and I plan to do others for the remaining of my Bachelor. Have in mind that I still have 2 \ 2 1/2 yrs left to my undergrad.

I'm going on a semester exchange to Bocconi in Fall 2019 (I know someone from NUS who on an exchange at Bocconi went that told me that if my grades are good enough at Bocconi, I could be considered like a local student for a Msc there aka easier to get in).
I am looking for/gonna get a 8month internship in a bank/financial firm (RBC, BMO, TD, PSP, CDPQ) during the Spring/Summer of 2020 in Montreal when i get back from my exchange

I'm VERY interested in working in London in a near future, and maybe transfer to HK/Mainland China later in life. I'm NOT really interested in working in the rest of Canada (i.e. Toronto, Calgary, Vancouver) or the US.

\\\\I'm also counting on a full/partial scholarship as I'm not really rich.\\\\

I am fluent in English and French, and I'm currently learning Italian (for my semester abroad)

My mom is French so worst case scenario, I can apply for French citizenship (still a pain in the ass) and would prefer Not to.

This would happen in three to five years from now as I am currently 19yrs old

1) Is Bocconi (Msc in Finance in English) really a target school/degree for IB/PE/HF in London? As I've heard people telling me it's just to fill in a quota of italians.
1.5) On linkedIn, it seems that the students are Only italians. Would this put me at a disadvantage for a job?

2) Is there a slight chance I get admitted in a BB in London or non-uk offices?

3) Should I really be worried about not finding a job/ being able to work in London as a NON-EU citizen/ and even as a EU citizen becuase of the BREXIT?

4) Should I rather look for a MscFin at HEC Montréal? (well known graduate School in Canada) (I should easily get accepted)