I think there are internal options for 1B long term. I wouldn't exclude bringing someone else in, but I don't think that's a priority right now.
To the original point of moving one of the 3 Cs on the 40 to 1B and/or DH, I don't see the point in it. Malloy is a DH. Canha, Urshela, and Ibanez have 1B experience. Keith and/or Jung could eventually be moved there. And despite Dingler banging it around recently in AAA, its tough to assume that carries up to MLB pitching.
Late add: And I don't think Torkelson should be written off just yet.