Everyone is different at the end of the day and some people get on better on certain micronutrients than others.
I would keep an eye on your portion sizes, you want to get rid of a few extra pounds so it is important to know the amount you are consuming...especially carbs.
If you have worked out your daily calorie requirements for your goal then carbs have there place. Once you have this figure, follow the ratio below and you can keep the carbs in.
Protein 40%-Carbs 40% and Fat 20%.
So you can have the spuds, rice and pasta just in the correct amounts even if you end up weighing it. Then fill your plate with veg or salad to bulk the feed and eat every 3 hours and you should be fine.
Work out your calories and follow the above then you will adjust and reep more results.
Start with your weight in stone x 14 = ? x10=daily calories required to loose. This is a starting figure so see how you go and adjust as needed.
Then split into the 40%-40%-20% as above then into six meals a day and you are ready to shed the pounds.
Hope that helps.