Abilify generally tends to cause sort of a restless energy...it was never sedating for me even at 10mg another one you have listed seroquel is very sedating for most people so I'm wondering if the last time you tapered off lithium were you on seroquel then? Is possible the lithium was blocking the sedating effect or something...

Another possibility is the combination of drugs you are taking so you've got 3 antipsychotics...they are all going to be competing for some of the same receptors....the effects of this aren't exactly known...I've seen some studies where 2 are used together like using abilify to mitigate the prolactin effect of risperidone and such but with 3 I'd say you're an experiment in progress so you get to write the manual...