Dont butcher that beautiful case, lol.
1st just wait until they get some instock with a solid left side panel.
2nd, if you want the fan on the side, the cut one out yourself, or take it somewhere to get it cut, just make sure the diameter of the hole you are drilling is slightly smaller than that of your fan.
You should be pretty set, and if you want tips on making/mounting a fanhole, im sure someone will tell ya how in here. Good luck.