Can't answer without more info... Is his bench way worse than his starting lineup? Are your guards high in BH and IQ? Are you the home team? Is your overall talent level at least equal to his?
If the answer to all of the above is yes, then by all means go uptempo. If the answer to all of these is no, then run slowdown and sacrifice a live goat to the RNG gods at midnight. Any combination of some yes and some no answers and you've got more of a dilemma on your hands.
One other thing... If you have a really good inside scorer, running uptempo against FCP and giving him a huge share of the distro will frequently get the opposing bigs in foul trouble. I think high LP guys have more luck than high PE guys against FCP, other things being equal.