cambridge land economy

thanks, can someone give me a chance of how likely I am to get in? I go to a private school but only have for the last year, and before that (where I got my GCSEs and other awards) I went to a free grammar school, which will be contextualised.
How bad is the not mention of the biology thing, because some people I asked said its good I didn't add it and instead used the sentence to explain relevant things like econ scores, maths scores and awards that link to econ directly and quantified my awards + and data science, and the bio thing was from 3 years ago.

I'm concerned that you're unable to interpret a profile with essentially perfect grades and a wealth of relevant cocurricular activities to discuss as being strong and actually believe it's weak.
It suggests poor analytical/critical thinking skills which will be a barrier to actually performing well in interview where you will be presumably given information and expected to make reasoned and justified arguments about that information/data, and then to revise those as needed in view of further new information they provide you. Are you one of those types who is very good at taking exams but not really in thinking about the material beyond whatever scores points on exam paper...? As those tend to the source of the statistics you see of "student with all A*s rejected from Oxbridge!" - as they are not rejected due to their exam grades but simply due to their inability to do anything beyond meet AOs on exam rubrics.
Either that or this is a humble brag.

but I only have 3 a levels not 4 and one A predicted. (maybe 3.5 or 4 since I do EPQ so predicted A*A*AA*) Also I wanted to know if my personal statement really differentiates and is strong enough, as most students are 'strong', but how do I know I am strong enough.

chat am I cooked
GCSEs: 9999999999 (10 x 9s or A**s) + Distinction in Language Endorsement
A-level Predicteds: A*A*A + A*(EPQ): Maths, Economics, Politics, EPQ in AI and Financial Forecasting
Work Experiences/Internships Mentioned: Google FinTech. Salesforce Business and Finance, Cisco AI and Tech, PWC Data-analytics
Awards: Mathematical Competition for Girls (Distinction), LSESU Economics Essay Comp and Northeastern and Extended School Essay: Highly Commended/Commended, Bebras Computational Challenge: Gold, House of Lords: Remarkable Mentor award (I didn't add uk biology challenge gold, is this a big deal because I was running low on characters and didn't want to add something irrelevant to economics?, wanted to add focused experiences as low on characters)
Mentioned a couple books I read
Did very well in school end of year and highest score in some sections for economics and top score in maths stats test once
Chair of economics society, led talks on xyz, and chief executive of an inspiring ethnic group organsiation, founder of a non-profit charity where I teach quantitative literacy to underprivileged children
Blogger and writer for school and external magazine on economics
Data science and machine learning pre-college program (mentioned for other courses like imperial)
Good at politics and makes nuanced, conceptional, substantiated and critical opinions and one of my essays really shone through
There is more stuff but I lowkey forgot because skl is so hectic. URGHHHH why did I not add the biology thingy and prefect??? Is it something to stress over....
This stuff above is from my reference and personal statement, is it good or bad and how cooked am I cos I forgot to mention bio thing and that im a prefect and didn't have space to include, but tried to showcase skills in other ways and showed leadership strongly, and prefect is super basic bcz basically everyone in my school is one.