Kirti Nagar is great option if you're looking for any furniture. You can even customize it to your design.
U can look to panchukuian furniture market near gol daak khana (CP near area).
Banjara Market Gurgaon or Kirti Nagar
Jail road, u definitely can get ur desired sofaset at reasonable price
Kirti Nagar is one and best option for this...if you needed some more discount just let me know i have good links there.