If your doing 30 net you could go up by 20-50g and see how that suits you. You would still be in the 50-100 range for ongoing weight loss. Just make sure they are primal carbs and you should be able to trust you satiety signals. Unless you have always been a calorie counter. In that case you should replace the fat calories with the carbs.
Low carb does not hurt your thyroid so dont worry about that. The physiological change in thyroid hormone from low carb IF it is from low carb goes away as soon as you reintroduce carbs.