Is this a good fantasy football team?

Your starting lineup is excellent. It's hard to say how good the team is overall without knowing how many teams are in the league. Lack of depth at RB may hurt you. If you don't have to carry two TEs you should dump Crump and look for a sleeper at RB (Kenny Watson is a good candidate to have a surprising year if Rudi Johnson falters). I am a Chargers fan so I'm biased, but this team has the potential to be one of those rare fantasy D/ST that can turn a good team into a great one. San Diego forced a combined 5.6 sacks and turnovers per game last year, and they scored 8 tds.