You're making it way too complicated. You need oils, fats and animal protein in your diet. Vegan diets can be very dangerous unless you don't know exactly what you're doing. Eat what you like to eat but if you want to keep the weight off and avoid sugar (even in fruit/alcohol), white rice. white potatoes and anything with white flour in it as much as possible. Also be physically active as much as possible.
I read that vegetarians live 2-3 years longer than meat eaters.
