new skimmer?

[mytank90]

hello i am looking to upgrade my skimmer .but am lost at what to get .i have a 120 gallon tank with about 30 gallon in sump .i have a few easy coral and 11 fish (3 tangs 2 triggers foxface small angle 4chromis)i now use a aqua medic t1000 in sump .i can fit a skimmer that is no more then 25 inch tall .local fish store said a swc 160 would be ok?looking to find a deal for around 500