Just a question, are you taking AEA and STEP just for fun? As you have not applied to Cambridge/Warwick, and none of your unis require these exams.
yep yep its all for fun i couldnt be bothered to even try for oxford/cambridge too much work to prepare for and warwick is in the middle of a field and i didnt like it:P
depends what your offer is if its the normal offer of STEP I (2) / AEA (Merit) then doing either one is ok if you do both you only need to meet it in one of the 2.
It will be VERY difficult. But if you just SLIGHTLY missed out on the entry requirements AND they have a few places left, they MIGHT take you. The fact that they give out offers to so many people is compensated by how incredibly strict they are with people who even slightly missed out on the entry requirements. So do your best to satisfy one of the entry requirements.