I don't see any complications, and it definitely won't be nearly as hard as writing the multiplayer logic from scratch. UE, even 4, is very friendly towards VR. It even launches OpenXR if you launch a UE instance with a headset connected to your PC.
Then it'll be all about animating Dr.Kel's hands/fingers, mapping controls (the logic "when holding F, attach the item to viewpoint" is already there), and adjusting FOV optimizations so the items won't pop up at the edge of the screen.
It won't be stable, but more than enough for VR enthusiasts and the alpha state of the game.