Hey. Llama...I can only speak from my older daughter's experience...as you know she just started Lamictal and Wellbutrin SR. She was doing well on the Lamictal but somehow when the Wellbutrin was added she was complaining of it making her sleepy. She takes 150mgs in the morning and 150mgs at night. I was thinking that perhaps she can take it at night when she wants to sleep....with the XL you can do that...have you tried?? That may eliminate the need for a sleep med as well. Sometimes just adjusting the times that you take meds can make a difference.
We don't know much about the Geodon but as you can see the Lamictal is a great med for both my girls.
I say that you need to go with the doc's recommendations....we all know how the mania is attractive and fun but we also know what always seems to follow. In the end it really isn't worth it when you have to go through the lows. It can be balanced to a level good feeling without the fog but it will take some working with the pdoc in tweaking the meds.
I hope that you can figure things out....,you certainly don't want to give up a med that actually may work for you so it is important that you give each one a fair chance.
Hang in there....and I hope that you find the right meds soon.
(((((HUGS))))) ~ Goody