Hello,
very interesting shaped living room with dining room you have. When I looking your reference, I saw you like light and white, but when I looking the old furniture you will keep, I can imagine something else. So, I decide to make two different layouts. One is like you asking for, with light walls, white furniture with little red colour. The second version is with nice furniture to fit with yours old the walls are little bit darker and the wood is natural. All furniture from second version are from www.maisonsdumonde.com.
I hope you will like it.