You're making an action movie...

[_Bolt_]

What is your cast (top 7)
Who is your director
Who is your producer

Now the trick is, your on a medium budget, so you cant overload with talent. So maybe 2 large leads and a good director/producer or 3 large actors but only a decent director and producer

Cast:

Lead Male : Mark Wahlberg (great actor) Protagonist
Lead Female : Scarlett Johansson (Pretty good actress, eye candy)

Rest of the Cast:

Aaron Eckhart (great actor) Antagonist
Kate Bosworth (pretty good actress)
Adam Brody (up and coming actor)
Hayden Panettiere (eye candy)
Matthew Perry (provides comical relief)
Jeremy Piven

You dont want a cast full of boring actors and you need to have a good mix. You want to draw people to come see your movie, and you dont always need "A" listers.

Producer: Jerry Bruckheimer

Director: Ridley Scott