First, I would ask the builder to give you the dimensions of the furniture used in the plan. Since they've already done the legwork-you will know which pieces will fit. Many times folks go the the furniture store and end up with a huge sectional and it over powers the room. Second, just get what you love! You have to live there. Start to create an idea book in Houzz. You'll start to see a pattern. Then just find a sofa like the one in your pic that is in your price range. Just keep repeating until you have all your pieces. Same thing with wall decor (which I would do last). Have fun!

This is my ground floor plan and some renovations are planned in ground floor ,that is attached too,please help me with me to draw the first floor plan(3rooms-1master bedroom with attached bathroom,and 2 rooms only a sitout too)

This photo has taken from the rare side and as u can see the two polls and the wires.

Could you please send me the sizes of each rooms of house in first floor ? That should be north facing and 800sqft rectangular shape.