Consult with a wound ostomy certified nurse (WOCN).
She or he will be the one to really help your surgeon figure out the best exit location for you within the restrictions of the surgery. Also get advice from her regarding activity. Once the surgeon places it, it’s sort of in your and the WOCN’s hands.
And if it is displaced, not the end of the world :).
But really, talk to a WOCN with a lot of ostomy experience before you do anything. She can talk to the surgeon and guide and help mark. It makes a huge difference.
Here is a link to the Chicago WOCN page. There are a few listed who are affiliated with Northwestern.
http://www.uoachicago.org/area-wocns/
Connie Kelly, Mary Kirby 312-926-6421
Northwestern Memorial Hospital
Karen Blum 312-695-6868
Northwestern Memorial Hospital, Digestive Health Clinic
Good luck!