OK so I worked out a lot of deals online on the components.
& it turns out like this with shipping in INR
San Marco Rolls Black = 3060/- (already ordered)
Trektro RL340 + Trektro Oryx Cantis x2 = 3400/-
Mavic A319 36hole rims + Cinelli Cork = 4107/-
Shimano 105 Black 10spd rd + Shimano 105Black 36 hub rear + Michellin Dynamic 28c(I like it's classic look) = 7665/-
Shimano R540 Pedals + Shimano 105-3triple FD + Edge Mount = 3745/-
The crnakset, headset, chain & seatpost will be locally purchased. So in the end it works out the same cost as the stock bike. So I think I'll stick to getting a Frameset+Downtuber shifters+Stem. This way I think I'll be lesser duties than on the complete bike.