They look a little small, I dont know if they'll have enough umph to overcome head pressure unless your ice bucket is level with the IC. I have a 300 gph pump that says it will do 12' of head and it is barely sufficient.
I would say they're way too small too. That's that kind of pump I've used in those little waterfall things and just put put a constant dribble of water. Think about how fast you would have to pour out a gallon of water to empty it in one minute and that would be the upper capacity of the pump. The manufacturers have charts with the GPH rating based on how high the water will be lifted. A 300-500 will probably give you better results and you can always slow it down with a valve.