I think the standard surgery for colonic inertia is removal of the colon and connecting the small intestine to the rectum. You do not need a j-pouch. J-pouch surgery are for those of us who had Ulcerative Colitis.
As for your family, my family did not support my decision to have surgery although I had languished ill for over 2 years. I think, in hindsight, THEY had too much fear and probably felt I did not know what I was doing. Even up until the day before surgery my brother questioned whether or not I might have celiac disease!! I think you need to put your foot down and tell them you appreciate their concern but you have made your decision, it's final, and you don't want to hear anymore of their good intentions. In my case my family FINALLY came around after they saw how quickly I regained my health following surgery. In my case I was immediately well.
Stand your ground and don't waiver. Let them know you have done the research, you have tests that prove it is necessary, and you want your quality of life back.
dx proctitis in 1987
dx UC in 1991, was stable until 1998
1998 started prednisone, asacol, pentasa, nortriptylene, ativan, 6MP, rowasa enemas and suppositories, hydrocortisone enemas, tried the SCD diet, being a vegetarian, omega 3s, flax, pranic healing, yoga, acupuncture, probiotics
2000 lost all my B-12 stores and became anemic
2001 opted for j-pouch surgery- now living life med-free