Gold Store redeeming options

Can I redeem multiple coupons in one order?

Example: 1999 gold on the memory card, 50% off coupon for OneX2 case and another 50% off coupon for Bullet Time Cord in one order?

I don't think I'll save much if I can only use 1 coupon per order, as the shipping costs would add the 50% cost of the accessory back.
Also - any suggestions to use my gold wisely? :D