This is a difficult forecast for my area as well. Models are trending nw a bit with the snow/sleet line this evening and overnight. Frankly, it's looking like Cedar Rapids may end up with a bunch of sleet, which sucks.
Regarding wave #2, while the globals have trended southeast, the CAMs continue to insist on a farther nw track of the deformation zone, right through Iowa.
My guess is I will get very little snow tonight and maybe 2-3" tomorrow.