Who should I play at wide receiver?

Hi, I am trying to beat my boyfriend in fantasy football but I don't know much about football. So I am wondering who to play at Wide Receiver. I have greg jennings, anquan boldin, and devin aromoshodu. We play 3 WR per week and there is malcom floyd, devin hester, jacoby jones, eddie royal, steve on, mohamed maquio, kevin walter,nate washington, mike williams (Sea), mark clayton, mike thomas, and Danny Amendola left on the free agent list..what changes should I make?