Ma Shaa Allah. Maa Shaa Allah !
Just after seeing the pic I thought it will definitely be MOTO GP schemed 600 bearing year 2015 or 2016. Just the biker things 
Yes, A super bike without roar don't look great 
Try to get atleast an imported mid pipe if you are not going for full system. Mid pipe does makes the significant difference in exhaust sound. Also try for any fuel management system once you get exhaust.
Gixxers comes alive after decat but that will not be a good idea on stock ecu at the same time.
Do plan a meet up. Let's ride together 