Who should I start at my flex W/R position this week. I have 1 spot available and 4 possible options.?

I'd go with Vincent Jackson because of Minnesota's poor ping defense, plus Jackson is going to be matched up with Rookie McCauley. He's more like to get you the most points. If the Chargers are smart and follow the last two teams that beat the Vikings, they'll throw and throw alot! Chargers will spread out the Vikings to open up the ping game get LT loose. This is coming from a die-hard Vikings fan! Good Luck!