I would go with opana xr to keep from feeling intense pain all the time. I would add maybe oxycodone 30mg for breakthrough pain. However, I would break the oxys in half and only take the second half if really needed. The reason I say oxy 30 is they never give you enough of a script for breakthrough pain, so having an extra 15mg per dose allows you to break them in half and have extra in case you have to do something that causes you pain and you end up using more than what you normally allow yourself.
Also, I am sorry for your injuries. I do not support the war, but I sure as hell respect, and admire all the troops fighting in it. Thank you for your service and if thre is anything that I can do let me know.