I would recommend sorting the P2279 (air inlet leak) issue first. P1093 often appears alongside P2279, but P1093 may still be a separate fueling issue.
The air inlet leak may be due to the boost tap or tubing is leaking. Could also be the oil filler cap leaks, or any other air inlet and/or vacuum (all that is attached to the intake manifold...including the PCV and its tubing) leaks.
The misfire codes are likely symptomatic of the two codes. I wouldn't swap in new plugs, coils, or injectors to resolve misfires just yet. Resolve the other codes and address misfires when they are the only codes you see stored.