I will try to keep this brief; I'm sure you are all very tired from finals 
I took organic chem in fall of 2011, a lot of stuff happened in my life, and I got a B in it.
I now have to take organic 2 of course, to complete the sequence (yes, all this time later), but I have forgotten much of organic 1.
Should I audit orgo 1 this summer and take orgo 2 in the second half?
Or.. just self study and take it in the second half?
I really don't want to re-take it for a grade, because if I got a B or worse... it would be terrible.
What say thee?

I took organic chem in fall of 2011, a lot of stuff happened in my life, and I got a B in it.
I now have to take organic 2 of course, to complete the sequence (yes, all this time later), but I have forgotten much of organic 1.
Should I audit orgo 1 this summer and take orgo 2 in the second half?
Or.. just self study and take it in the second half?
I really don't want to re-take it for a grade, because if I got a B or worse... it would be terrible.
What say thee?