Mallory,
I am not a doctor, so don't take this as medical advice. Before making this decision, i would consult the surgeons on both those procedures to know the exact risks involved which im sure youve already done or are planning to do. Perhaps there is a solution less radical than a colostomy bag that would hep. In my work with the special needs community, i have been made aware of a procedure called MACE, which is useful for those with neurogenic bowel. What it is is a stoma type deal sugically attatched to the colon that flushes out the the colon so that it is empty, which should make it so that accidents are less likely to
occur://www.medscape.com/viewarticle/410216. As far as the urine side of things, it would appear there are several different ostomy procedures to consider:
http://coloradourologists.com/documents/Urostomy.pdf I hope this information helps. Again I would advise seeing a range of professionals, perhaps an OT and pysiatrist as Patrick suggested, and get opinons. This is potentially a life altering decision. One thing I might advise, and you are free to accept or reject this would say though is don't base your decisions soley on what is most convinent for your caregivers. If they are being paid, then it is their job to help you. If you do these procedures, it should be done because you think it would give you a better quality of life. If the risks are too great, then you need to decide against them, wheter or not it makes their job more inconvinent. Of course, you are your own person , and all the decisions are up to you. I would point out that one possible complicaiton of ether the urostomy or the colostomy option would possibly interfere with transfers, if they do the one-person pivot transfer. Maybe it would, I don;t know.
But i hope this post helps somewhat.
Peace out!
Rob