2.5 hours is perfect. Do a 2.5 hour show, then if USA wants the 3 hours make a post-game show (RAW-Talk, but put it on USA). Plus by having your own post-show as a lead-in you can conceivably end the show any time between 10:30 and 10:50, making you unsure as to when a match will end. (Come 10:58 you know the match is ending imminently which hurts the match.