Hi Bhavik,
Thanks a lot for your answer! It addresses all my questions.
As I had expected, it really depends a lot for all the schools. But bottom line, it seems that the internship will be a major roadblock as I won't be as flexible as I would want to (especially for on-campus interviews). Additionally, we should all not forget that those interviews expect a certain preparation and the long hours in consulting might be a problem. Though I expect almost all top 15 schools will have alumni in Germany, I would still prefer to try to meet the AdCom directly. Though it's a risky job, my generally energetic and friendly might help there (I hope).
As Oct 15th to Dec 10th is a pretty long window, I would rather prefer postponing the internship for Q1 2016 (pre-MBA). The schools on my list so far are H/S/W, Booth, Kellogg, MIT, Haas, Columbia, Tuck, and especially Columbia and Tuck with their early decision rounds might kick-off interviews earlier. The good thing again is that Tuck offer a self-initiated interview, something I might make use of
![Smile :)](https://cdn.gmatclub.com/cdn/files/forum/images/smilies/icon_smile.gif)
Should anything else along the entire interview process pop-up, feel free to reach out! Take care!