I never had the "usual" symptoms of Crohn's either. Initailly given the choice of surgery or Remicade. Many tests later and confirmed scar tissue, I had a resection.
One thing I would recommend discussing with the surgeon is the expectations of surgery. I thought I might be med free or on a lesser drug after surgery but not the case. Also in my case I knew I had a stricture in the colon but what if they find other afffected areas? You should talk about this as well.
I am doing great and happy with my decisions so far, they are not easy to make.