5 year programs are for students who are struggling academically, so I don't think there has ever been a 5 year student with a 4.0. Having good grades is an important part of getting the residency you are interested in, but not everything. Personality match is a big part during the externship time you spend at the program your 4th year. I know many high GPA people who are not great with patients and they will struggle getting the residencies they want.
I would focus your academic goals more on setting a certain amount of time to study for each subject or a goal to get through a certain amount of material. The grades will reflect your dedication to setting study goals. Don't stress over GPA, you will drive yourself nuts and act too competitively with others. Put the time in and the grades will reflect that.
We all are trying to be better doctors and that requires a well balanced life. Not all academics.