A professional photographer would be an excellent idea. But if you don't think you can afford to do so and want to invest in an appropriate camera and lighting which can be very expensive. B & H photo in New York could probably advise you. Or Adorama. But there is definitely a learning curve to do great photography. It is not as easy as it looks. Different backdrops take different lighting. It also depends on the lighting in the area you will be taking the pictures.

Love the armless sofa-bench! Try using it in the center as a "cross-linking" piece between the sofa and chairs. That way people can sit on both sides of it, conversing with the sofa people and the chair people. Put the chairs where it is and use the side table from the left of the pic, or the one with flowers, between them. You'll need one huge rug to anchor the space or two smaller, and very similar ones, to put on either side of the blue sofa-bench. The other two side tables are too tall and too short for your seating pieces, so ditch them. Use your coffee table between the sofa and armless sofa (18" away from each of them.) Here's a chart for judging table and lamp heights as you'll need to work on that for balance. Please try this arrangement, and post by commenting and using the Attach Images button to add pix of the update. We'll tweak it on out from there.

Perhaps a large round table might mean a rug is not at all necessary. It could be a metal tray table, or carved wood like Rebecca Mitchell Interiors illustrates. Ideas also to consider, using multiple tables can be found at http://www.houzz.com/multiple-coffee-tables. I also agree with comments above that some color is needed on the walls. You could then hang round mirrors, or an unusual curved shape like RMI shows above.

You don't have to give up your beloved pink. Pink, brown and grey are doable. I googled pink and grey living room and saw some great pictures. Maybe get a large carpet that pulls out the pink (must match the same shade of pink). Then place your beautiful little pink and cream Kashmir(?) carpet over it. Also pull that same pink into sofa pillows. And a similar pink and brown Tablecloth for the dining table will pull the colours together. Just need to make sure all the pinks are the same shade with small accents/border of the same brown and grey from the sofa. Solid colours or subtle designs will be easier to coordinate than bold dramatic prints. These 2 are not the right shade of pink but you get the idea, I hope. Carpets with tone on tone pattern. A dusty rose on one wall would be nice too.