First, sorry you hadn't rec'd a reply earlier, but here's my take.........
#1.) Yes, I'd suggest Lexapro.
#2.) Lexapro & Wellbutrin are used in combination often, but more often one or the other. I have never taken Wellbutrin, but my brother went from Lexapro to Wellbutrin & seems to be doing well. (never got a straight story out of him as to why he quit Lex)
#3.) Seroquel *AND* Klonopin must give you some pretty good sleep?? Klonopin knocks me out and I can't take it at all, but I only take benzos if I'm in an episode which I haven't had in about a year.
I also use Seroquel only when in an episode and only at night to get to sleep. Works great for sleep & may help me otherwise, too, but I discontinue use when I'm feeling better, so can't speak of long-term use.
#4.) STICK TO YOUR OWN DIAGNOSIS ABOUT THE BP STUFF!!! My pdoc tried to pigeon hole me into that and I battled back using logic and reason, for which he had no defense. I can get up and I can get down, but I am definitely not bipolar and I don't need some pdoc who's being spoon fed too much medical media bias to convince that I am, just to fit his desire to label me.
Lastly, it might be a good idea to either consolidate some of your medication (thus my inquiry about Klonopin *and* Seroquel) thru your current doc or perhaps even seek a 2nd opinion. ???
Just my 2 cents!