Low FP carbs tend to be either low carb (i.e., tofu) or high GI (i.e., jasmine rice). These need to be balanced. Recognizing this, I have purposefully limited overall daily carb counts in the recipes to approximately 75 grams per day. That level won’t give most people blood sugar issues – considering that the Stardard American Diet includes roughly 300 grams of carbs per day (big difference!). Reducing overall carbs counts is much more effective for controlling blood sugar than eating low GI carbs.
Even for diabetics, the ADA, until recently, recommended a minimum of 120 grams or carbs per day. This has recently been updated according to some reports to an average of around 60 grams of carbs per day. Still, for diabetics and other people with blood sugar / metabolic issues, I recommend even lower levels of daily carb counts as the best strategy. When you reduce carbs, you can up your protein counts a bit, but adding healthy fats, as you mentioned, is a great option.
Blood sugar issues are discussed in detail in FTD IBS, I will be sure to include this in the next edition of FTD Heartburn, that I am working on now.