Oh and one bit of advice - do your EE in English or History. Or anything that's a proper 'essay' subject.. Not sure about if you went for an Oxbridge interview or anything, but I did mine in Maths thinking the unis would care - they didn't, and now I'm risking getting only 2 core points because I found a Maths EE really, really hard :/ :/
i heard only about 15 people a year get 45 IB points?
What's the deal about getting 45? You can easily get a 45 if you take easy subjects for you like ecosystems, maths studies etc. even if you're good at both science and math, or if you're fluent in a language yet take it at B level. A 38 with challenging subjects is much more impressive than a 45 with easy subjects. You should go to school aiming to learn as much as possible rather than aiming for a certain no of points.
guy at my school, english is his THIRD language (after German and Greek) applying for physics. predicted 45, maths, phys and chem HL, rejected from cambs after interview rejected from Yale, Princeton and Stanford (he got almost full marks on the SATs). and he is one of the nicest, most naturally kind people I have ever met, not to mention he is great at basketball, plays violin and guitar and piano at grade 8 standard... sometimes I really do wonder what these uni's are possibly looking for. I have a bad feeling it may be somewhat down to the fact that it is a state school, and therefore the 'tutoring' so to speak on how to get into these top uni's wasn't available to him, either that or he is massively unlucky/everyone hates the IB ha.