From the UCB appeals process::
Our original selection process involves careful individual reading of each application and it is very unlikely that we will choose to reverse our original decision. We strongly discourage letters of appeal unless you can provide significant and compelling information for us to consider. Disagreement with the decision is not a valid reason for an appeal. Information regarding internships or activities you participated in after the original application deadline is not relevant and should not be included in your appeal. For an appeal to have merit it must bring to light new information regarding your academic performance and/or information pertaining to extenuating circumstances that were not discussed in the application.
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None of the above points you listed meet “new and compelling”. You have been accepted to some good schools, so love the school that loves you and move on.