If northerns are big and in an agressive mood i will go with:
1 Rapala Magnum - firetiger
2 Rapala Saltwater Magnum - Green Mackeral
3 Spinnerbait 1 1/2 oz LIme green or Blaze orange Bucktail
4 Rapala J13 Jointed Perch and Orange
5 Spoons 3 3/4" red/white and five of diamonds
If they are smaller but agressive northerns
1 Spinnerbait 3/4oz white
2 Cotton Cordell Ripplin Redfin silver or green
3 #5 mepps silver
If the fish are big but sluggish
1 4" tube baits (try to closely match the water colour)
2 Mepps #5 silver
Topwater
BIggest Rapala Skitterpop (i have nailed a ton of pike on these topwater lures....brown frog pattern)
Largest Hula Popper (white, black and charteause have worked great for me)
Walleye:
Cotton Cordell Ripplin redfin silver
CC Walleye diver
CC Walleye demon (if you can find it)
Rapala Shad Rap
Worm harnesses
Jigs (good selection of 1/16- 1/2oz) + twister tails (1 1/2-3")