Stimulants do help some people, even those with a label of "bipolar I," and rarely even someone with a diagnosis of "schizophrenia."

If you're concerned about agitation, (hypo)mania, all that, but still want a stimulant...maybe ritalin, focalin, or even Provigil/NuVigil? Just a thought.

Are you sure you want to take 2 full dose antipsychotics? Its your life, your doctor, etc., but...wow. 2 antipsychotics+a stimulant would have my brain in a hot mess.