<p>Since your ultimate goal is to be a professional wedding/family photographer....have you considered a 6D instead of a crop sensor? As you note, your animal/nature shots are "in different lights"....if so,while a 7D is good for wildlife/sports,image quality suffers as the light diminishes. I rarely,if ever, go over 800 ISO with my 7D because IQ suffers dramatically.<br>
The 6D might, also,work for your animal/nature photos,especially in low light...<em>unless</em> 'animals' include birds and other fast moving creatures...then the 6D's AF is unlikely to be able to track their quick movements. Fast moving subjects would be better tracked with one of your crop choices.....but then IQ takes a hit in low light. Bottom line is there is no 'one camera does it all'.<br>
Based on your budget, I realize the 6D may be out of reach right now...so of your 3 choices, the 70D (better sensor than 7D) may serve you best while in school. Agree with JDM...check with your school for their recommendations/deals. Good luck!</p>
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