If you have never had small bowel disease or fistulising/perianal disease, you are probably a suitable candidate for a j-pouch.
But I would seek out a second and even third opinion as suggested, since the J-pouch for Crohn's is still a somewhat controversial operation. All I can say is if I'd had the chance, I would have gone for it (terminal ileum involvement killed my chances of a j-pouch), but you do need to be aware the Crohn's might come back after surgery.
In this study, 71% of patients still had their j-pouch after 10 years: www.ncbi.nlm.nih.gov/pubmed/18936574
Abstract discussing the use of the IPAA in Crohn's colitis:www.ncbi.nlm.nih.gov/pubmed/19845173
If you don't have any rectal involvement, you could also ask about
an ileorectal anastomosis (IRA). That's where you keep the rectum and hook the ileum up to it. I can only find direct comparisons between the J-pouch and the IRA for FAP patients: www.ncbi.nlm.nih.gov/pubmed/16511903
The only bad side I can detect about
having an IRA from that meta-analysis is the increased risk of rectal cancer. (But that might be due to having FAP, I dunno.) One positive from the Crohn's point of view is that the IRA would preserve more of your small bowel. The creation of the J-pouch uses about
2 feet of small bowel, which would have to go if you needed to revert to an ileostomy.
Anyway, it's just something to consider and bring up to your colorectal surgeon if interested.