LT is a risky pick because they already have a young developmental player there. Once they extend Thuney the interior OL will be blocked for the next couple years.
That makes Campbell and Banks even more risky options because they both could be forced inside to guard. DE is also tricky because Sweat's likely here for at least the next two years and Dayo plays a lot of snaps.
Campbell and Banks are expected to play tackle. Even those acknowledging that there's a chance they may need to move inside are very high on their future there, and Campbell has even been mentioned as a possibility at Center.
"Risky" is the last word I would use to describe them as prospects.
If you mean simply that it's a "risk" that the Bears would have terrific depth and flexibility, then I suppose that's true.
Using #10 on a guy who would be a backup immediately or would definitely only be IOL is one thing. But they both are likely to stick at T, and IOL would not be a bad thing and that's worst case scenario.