I am having a weird problem with my brakes. sometimes the brakes are fine and they do their job like they are supposed to and other times they are stupid sensitive. Like a light tap of the brakes can lock the front end right up. Also after driving the car and parking it I can hear this clunking noise in the front end as the calipers slowly seperate. I think the calipers are tired and need to be replaced...which is probably what I am gonna do. Is there anything else that I should get done as well?

 

Your discription sounds like there is blockage somewhere in the front lines and when you park your car your hearing the pressure bleeding off from your front calipers.
Try replaceing the front rubber brake hoses first since you should do that when replaceing front calipers anyway and I bet it fix's the problem without replaceing the calipers.