I think looking at the Spurs model and trying to copy the way they do things is a fools game. Cant duplicate it until you have built up a core and a reputation for 10 years. Not like they had Duncan on a discount in his prime. When the guys are in their prime and havent won a title yet, you arent getting them to take discounts - especially for a franchise with no championship pedigree.
Gonna have to pay now, and the discounts will come down the line