First I would recomend you put the OS on to the 120gb SSD , when you put the OS on a drive less than 90gb it tends to become tight for space over time with updates and installs tha get put on the C drive because it's the default install drive and some programs can't be changed. Put your games on the 60 gb and keep the current ones there with others on the larger drive that you might not play as much.
If there is one game that you play a lot and maybe most of the time then put that one on the C drive.
As far as which sata port you want to put the OS SSD on the sata 3 0 and the other SSD on sata 3.0 1, from there start using the sata3 M ports. The sata3 0and 1 ports are the Intel controlled ports and you want your OS drive on the Intel controlled ports.