I'm with drifter here on lure choices for lakers, the meegs, white tubes (i like yum vibraking) and williams are my 3 laker go to's, i also like the lindy slick jigs and they can be tipped with a tube or full live minnow (the action on the up-lift is great!).
As for the shrimp, i was catching lots of jumbo perch on simcoe first ice, they were FULL of scuds, almost every fish regurgitaed scuds in and around the hole as i unbuttoned them. I tied a 'bro bug scud' in brown (almost an exact match to the real deal!) and slayed em! i fished it as a dropper under a small rapala. Its gonna be a good match for the shrimp you got there too maybe, but its small and light so its gonna need to be rigged as a dropper under a heavyer spoon/lure to get it down anywhere near deep enough (i'm going under the presumption that you are fishing over deep water)
As a general rule for lakers i like bigger baits rather than tiny mico jigs and plastic(i even had sucsess with a clackin rap this yr!)