The GSH are very much adapted to Wisconsin. Some feel they compete with BG and other panfish, so some people do not stock them. Its my personal opinion there is little competition and would stock them. If you do stock the walleye(WE), I would go with the lower number, say 100. The odds that they will naturally reproduce in your small lake are better than most but the survival of the YOY would be the real challenge. The LMB are very efficient at eating YOY WE. With the right cover you may get some natural reproduction and survival of YOY WE. Keep an eye on the reproduction. If they naturally reproduce with survival, you may not have to stock them annually. You may have to seine your pond or electroshock it to find out if they are successful though... Best of luck!