Who is your doctor? Timothy Leary?
I would rather go with an SNRI before getting into the amphetamine game.
Prozac is one of the more energizing SSRI's on the market. Given that you also suffer bad anxiety I would worry that augmentation with an Anphetimine type drug may not be wise.
To me it sounds like a good way to make your anxiety shoot thru the roof.
I hope this doctor is a Psychiatrist. From his game plan for your treatment I have a feeling he is not.