Updated: should i accept this fantasy trade?

Personally I would be insulted by that trade offer. You're screwing yourself if you accept it. Johnson, Owens and Welker are going to get you some serious points and the Eagles D should be alot better this year. Jones has been on a downward slope and Coles has been average at best the past couple of years. Keep your guys or do some research and counter the trade that not only suits your needs but those of your trade partner.