courses?

Now I'm debating whether or not to take this chemistry course starting May. It's a summer course so yes, it's going to be quick quick quick. And well, I'm not sure I can handle a speed chem course like that. I think the odds would be against me (based on past experiences of course)...I thought I should give it a go at one point but I cant make the same mistake I've always made: putting too much on my plate. Yes, it's only one class for starters, but im also working a full time job so... At least I"ll have the opportunity to take it in the Fall if I decide...