not going to happen unless you have a LOT of money.
Just a parking ticket with tailgating in a car/truck will run you about $100.00. we have season tickets, last year had parking/tailgating and it was awesome but that was because I'm friends with Jeff Fisher's sister so we partied with the coaches family, friends, etc. but when he was fired my connection was lost. Now the hot ticket is take the train. You can do it from Oxnard to Union Station, then the Expo line drops you off between USC and the colesium. There are tailgate parties all over and some you can pay to attend but you might find someone within the Redskins fan groups, most would welcome fellow fans. Tailgating off the train is doable.
PM me for more info. if you'd like.