i once asked from a Honda service center in Pindi. He quoted 18K for whole Deluxe setup including discbrake, shocks, front wheel assembly everything. It was few months back.
I think there should be no issue with Deluxe stuff as well. But deluxe shocks come in black only... right?? while piaggio's come in same colour as GS. Also fender bolt positioning is different on Deluxe so you'll have to change to Deluxe front fender as well, while on piaggio's setup you can keep your original front fender.
And yeah, even piaggio's stuff isn't costing 14K anymore, go check the prices from mcleod road.