IB vs S&T: A lurker's questions

I'm currently a 2nd-year student debating IB (M&A/leveraged finance) vs Trading (Fixed income/FX).
General opinions or targeted advice is welcome, Thanks in advance.

I have lurked on WSO for some time now but have heard contradictory opinions and have a couple questions... :)

I have heard S&T has a higher maths requirement than IB, particularly on Exotics etc. given the advancing nature of AI, within the next 20 years, is there potential for a significant decline in plain Vanilla jobs.. (ie jobs that don't require excessive maths)? I gather IB will probably be less automated...?

I understand team fit and a degree of job satisfaction is essential regardless of pathway with either role. But, if unsure between the two options, to what extent should exit options affect my decision?

For summer internships, is Trading less competitive? Without a network do I stand more chance in trading, I read a very disheartening thread on Quora regarding breaking into IB with little network.

With IB/S&T, is there any desk to avoid (I've gathered that plain equities may be automated soon?)

Given my profile (below), am I likely to have more luck (if any) in S&T/IB... I know this is vague but all criticism welcome.. and yes no work experience is not good ;)

• No network (ie parents = no use) but have tried at Uni... spent many nights at bank events b/ no spring week (only applied for S&T) :(
• UK semi-target BSc, 1st class in year 1,econ/bus course, currently yr2 study abroad (world top 15 Uni)
• AAB A-level (inc. maths @ A, DISAPPOINTED ). 6 AS, Best research report in school
• Ex-national level sport, NO WORK EXPERIENCE, Kangaroo qualifier UKMT etc....