Ike Davis has dealt with a bone bruise that turned into a season-ending injury and then an unusual ailment — Valley fever — that robbed him of strength for much of last year. Just when he had put those issues behind him, Davis now finds himself in the middle of an unproven — at best — Mets lineup. “I think we’re going to be pretty good,” Davis said. “And I have enough to worry about with myself before I start worrying about anyone else.” Still, for someone who is not known for plate discipline, the lack of significant bats around him is worrisome to others, if not to Davis. “He’s a guy who swings at a lot of bad pitches anyway and he’s probably going to see a lot more of them now,” one scout said. “I wouldn’t throw too many good ones to him.” While Davis figures to have David Wright in front of him, the Mets’ lineup after the first baseman in the cleanup spot is ugly — with Lucas Duda a possibility in the five-hole. Yesterday, sandwiched between Collin Cowgill and Marlon Byrd, Davis doubled to left-center against Atlanta’s Tim Hudson, before being hit by a pitch and striking out in a 4-2 loss to the Braves at Tradition Field. Despite the potential issues, hitting coach Dave Hudgens is confident Davis is up to the task.