Thrasher are you seriously advising taking debts for purchasing a watch? Well, I guess I should not interfere in this regard but taking debts for aquiring luxury seems to be a bad approach regardless of the conditions of the loan agreement.
Better save your stocks untill you can pay it cash. I know the swiss watch industry increases the retail prices on a regular Basis and therefore it appears to be a good idea to buy one as fast as possible, but looking at the prices for used ones the SMP does not hold or increase its value. Hence, in case of need you would have to sell it with loss and be bound to the loan.