If you have a preferred retailer, go there and show the salesperson the pictures you posted so they can see what color the pieces are that you're going to keep and what your rug looks like. They should be able to make several suggestions. Bring home fabric samples so you can see them in your house. The lighting in stores is rarely the same as what you will have in your home. You can have too many pieces of leather furniture, so getting something with cloth upholstery is a good idea. I also wouldn't get a solid color as that has the potential of being boring - for instance, the beige color in the rug wouldn't be my first choice. Even if the pattern in the material is subtle, it would help to have some pattern to add interest. Furniture salespeople have to do this kind of mix and match all the time. Just walk away if they get too pushy. :-)

Thanks so much. Great suggestions.