It makes good sense to be mindful of your five prior surgeries. I think you’ll find multiple sources that claim to be good for post-surgical fitness, and some of them are probably good. When you asked your question in a J-pouch-specific way I thought you might not find anything. In the meantime, since you’re about 8 months post-takedown, you really have no specific limitations. I’d suggest being careful to try to distinguish the discomfort from working lazy muscles (good!) from any “different” discomfort (bad!). I tend to use lighter loads and more reps to be kind to my body, whether it’s my abdominal wall or my joints. Hopefully others may have more specific sources for you.