Get the most from the PS you have and consider the iCharger 306b, its a 30amp, 1000watt charger. Your PS will should run it at full power if iCharger's claims of 90+% charger efficiency are accurate. It has more flexibility than the Hyperions. This will provide the most from your PS and give you 10more amps for max charge rate. Important if you have lipos that are high C charge capable or want to do any parallel charging.
Just curious, but what PS do you have, I'm looking for a 1000+watt one myself.