you should experiment with technique some. I could be mistaken but the typical metal militia setup is on the toes. I bought the DVD and started setting up like that...then I visited Southside and learned from Dizenzo who learned from Crawford and he had me get on my heels rather than my toes...big toe up in your shoe. Then this past weekend while at TPS, CJ Murphy talked about trying to push your feet out the toes of your shoes, which was a helpful way of thinking of it.
Not all feds require heels on the ground. Most feds DO require that the feet do not move after set for the press.
Main point here is, don't be afraid to try some new stuff...your bench isn't really at the point where I'd say that you've really perfected the lift (unless you weigh about 97 lbs.)