I have no idea how to convert metric to pounds, but yes! Yes, you have a fabulous plan to lose weight in a safe, healthy, and quick way. If you can keep it up that is... If you plateau, consider changing your exercise up a bit. Also add in 2 days a week of weight training. It will slow your "weight loss," but speed up your fat loss. Who cares about the number on the scale if we look hot in a wedding dress???

Good luck

The elliptical trainer will help you with a couple facets of fitness: You will burn calories and will exercise your heart. This is cardiovascular exercise. However, if your goal is to get toned, you will need to integrate another type of training into your routine. The most effective training routine you could do from your home would be some kind of circuit routine. You could use your elliptical trainer, but rotate between that and doing things like air squats, lunges, sit ups, and some lighter weight lifting. I would also recommend resistance band training, which is extremely useful for toning.

If you integrate these other types of exercise into your routine, you should burn more fat and tone your muscles... don't worry about your muscles getting big, it won't happen. Your lack of testosterone will prevent you from getting manly muscles.

In terms of diet, I would focus on eliminating simple sugars from your diet completely, especially the liquid calories of soda and fruit juices. Also, cut down on your intake of simple carbs, like white bread, except for right after you exercise. Lean protein and healthy fats should be the main facets of your diet. Healthy fats are things like omega-3s from fish, avocado, almonds...

Good luck!

I've linked some exercises