You may want to wait for another cold spell before trying out new water in Iowa. The ice is going go bad pretty quickly this weekend.
That said, when you do get over to Lansing the backwaters are a very different game fishing-wise from ponds and reservoirs of the sort you have in central Iowa. Shallow water with weeds--I'm talking three to five feet deep--is what you want to look for. If you can find a deep backwater with safe ice, so much the better, but there are not many of those in the areas I fish on the river.
I don't know the Lansing area well, so I can't give any pointers on where to go there. There are some other people here who can help you out with that.