The FCC has already granted approval for the use of Intelsat 30 at 95°W. There isn't going to be a holdup like the one going on with SES-3. Also, the primary use of Intelsat 30 is indeed going to be for DirecTV services to South America, the Caribbean, and, possibly, the southwest United States (there is an 11400-11700 MHz Ku-band footprint that will be centered over California). As for C-band from this satellite, the C-band payload aboard is only capable of operating in the extended part of the band between 3400-3700 MHz (space-to-earth). These frequencies are mostly reserved for non-broadcast purposes in the United States, and Intelsat has informed the FCC that they have no intention of using Intelsat 30 to provide C-band service to the United States.
Following the launch of Intelsat 30, a virtually identical satellite, Intelsat 31, is expected to be launched and placed alongside Intelsat 30 at 95°W. As far as I am aware, Galaxy 3C is going to stay at 95°W and will operate alongside the two new satellites. Galaxy 3C should still have 3+ years of life remaining.