time is running out

I need to make a decision. About my future  my class schedule. By Monday. I need help.

I have two required classes left to take for Psychology. And two semesters. I'm not going to get into how guilty I feel that I didn't graduate early, but for now my only defense is that I have to write my Bachelor's Essay next year for the Honors College, which is like writing an Undergrad thesis. And it is gonna take a lot of research and a lot of time.
Anyway. Time is running out.

I have to take my psychology lab OR Cognitive Psychology next semester, but not both, because then I complete my major and lose my scholarship. At least that is what I have been told. 

Option 1: Take Cognitive next semester, and hope that the labs don't fill up in the Spring.
Option 2:  Take the Conditioning and Learning lab next semester.

Why Claire, you say, you don't like your Conditioning class now, and you probably don't want to work with a rat for four months next semester, why would you take this lab? Simple, I answer, because all the other labs have prerequisites and even though I feel like I have taken all the psych classes C of C offers, I have so far managed to not take any of the other three lab classes except C + L. Damn.

So I either take a lab that I will probably not like and get awful friendly with a five pound rodent next semester, or I run the risk of signing up in the Spring and somehow (despite priority registration) missing out on this quickly-filling class and not getting to graduate.

Help!