Thats pretty much your choice!!!! It just depends on how much you want to spank you buddies. I say this because at 2500 in fifth gear you can just roll it on and overtake you buddies Harley's with little effort. Down shifting a gear will really male them jealous. Not third gear stock you won't get much benefit two down shifts and a stock rev limit you'll be close to the limit plus the two click times. If your bike was built then well doing a burnout at 60 mph can be fun and your budies might switch to Triumph!!!!!
But the fact still remains that you do not need to she will pull just fine.