Just plan on replacing all of those upper gaskets. You'll need upper plenum gasket, o-rings for injectors (unless your cleaning comes with them), crush gasket for fuel line banjo bolt (might as well, its cheap), and egr valve gasket. The egr gasket will usually look fine, but at $1.90 its worth it; I didn't and about 6 months later I spent hours tracking down a rough idle just to find it was that gasket after all.

Also, while you have that upper plenum off might as well inspect the wiring harness (and injector splices) if it hasn't been done before. Additionally that upper intake piece is off so spray out all the little vacuum connections with cleaner to make sure none are plugged up. If you have the time I'd say take off the throttle body and give it a good inspection/cleaning, however that would mean you also need that gasket too.