my husband's situation is almost identical, diagnosed at 69, avoided coloscopies, cancer discovered at stage IV, no surgery and he's nearing 3 years of palliative treatment and stable tumors. Living with cancer isn't easy, but for him it hasn't been a battle for a cure, but rather a plan for an extended, quality life. CEA dropped to 3, back around 7. Tolerating treatment although he's had to adjust dosage, switched to oral Xeloda plus Avastin infusion, and is able to enjoy an active lifestyle despite neuropathy and fatigue. I think your treatment plan is fairly standard. Best wishes as your journey continues.