SpawnFan
Super Freak
From my personal experience, you should just pre-order 4 pc and once this order is confirmed, cancelled your previous order of 2 pc.
I pre-ordered the Hobbits Sam and Frodo seprately and they came shipped together, helping me save on shipping costs. On the other hand, I pre-ordered 2 pc of Bespin Luke seperately and they came shipped seperately just a few days from each other, resulting in higher shipping costs for me.
Hmm never thought of that solution, thanks.
Let's hope I will be able to cancel the 2 after I ordered the 4.