Hi All- Need some guidance with my living room. I am getting all new furniture for my living room and so far I have the following plan

http://drexelheritage.icovia.com/default.aspx?projGuid=27B6A7B3-191A-4907-9C25-1C489BA53B6C

Please can you let me know given the dimensions of the living room is the 87 inch wide sofa too small?? What should be the ideal size? and for the two chairs again what size will look best...I am looking for contemporary styles..

I have also included what the living room actually looks like at the moment. We have a 97 inch wide sofa at the moment which has turned out to be a disaster quality wise so its going back...The rug is just a makeshift I am planning to get a bigger rug for the space, the coffee table stays

Many thanks for your help in advance