What about HSB/WE combo. Your LMB will reproduce which will require you to manage the YP and LMB. If you go the other route, you will have to add more to down the road but it gives you control. If YP numbers go up, just add more predators, if they go down remove a few. I believe there are a number of people on the forum using the YP/HSB combo and some are also adding SMB but they will reproduce.
