At this point, I'd be okay starting Conte. He wasn't perfect in Seattle, but he at least played fast. With a representative D-line, I think we'll see Conte play at the level of an average NFL safety, which is a lot more than we can say about Danny McCray. Nothing against McCray, but he's a special teamer and I don't want him anywhere near the field when the Bears are on defense.
Related note, though, I'd love the Bears to bring in Chris Clemons. He could be up to speed and ready to go by the SF game.