It's a crap shoot on whether or not you would be successful if you reconnect. I know several j-pouchers who have Crohn's and can manage their disease with their pouch quite successfully. You might want to visit www.j-pouch.org for more information. They have an ostomy forum on that site as well. I eat everything and have never had butt burn. From what I gather from others, they all eat everything and prepare for it. Each poucher is different which is why you get conflicting information.
As for the ostomy site, the method of closure depends upon the surgeon. Mine was closed with internal stitches and super glue. Many others have had the open wound method. Your surgeon can best tell you which method he/she uses.
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