A late goal from Ben Reeves secured the Shrimpers a 2-2 draw against the O's and a 3-2 aggregate win in the southern area final.
And Sturrock now wants a win at Wembley against the Railwaymen, who beat Southend in the semi-final of last season's League Two play-offs.
"It's a chance for us to get revenge against Crewe after what happened in the play-offs last season and it's going to be a great day," Sturrock said.
"Crewe are a good side but it's going to be an occasion to really enjoy.
"I'm delighted for the fans of this football club because they've been through more than most in the past six years or so.
"But now they will be heading to Wembley and I couldn't be happier."