You're right to wait until you've healed; regardless of strictures, so soon after bowel surgery your intestine is healing and will not cope well with foods that are hard to digest.
Doctors seem to usually advise a six to eight week time frame to heal from this kind of surgery. After that time, I would try some of the foods you want to, but go slow and remember the amount you eat is very important as well as the type of food. Eat a little at first, maybe try something intermediate, like veg that is cooked, but which has not been cooked for as long as you cooked them when you had the stricture.
Some people with Crohn's will never tolerate raw fruits and veg (or nuts, seeds, whole grains, etc.). But there's a big difference between not tolerating something in the sense that it makes your symptoms temporarily worse (which you may feel is worth it and choose to put up with), and getting a blockage or other dangerous complication. You might be best to check with your doctor that you're not likely to experience the latter.
