I took my wifes 01 4runner into have the balljoints replaced as part of a recall campaign and while they were working on it they saw the water pump leaking "a little more than a seep." They say that not only does the water pump need replacing, but that when that leaks, it leaks onto the timing belt which then needs to be changed as well. I'd like to do the work myself, but I've never tried doing something like this, most complex thing I've done is the birf job on an 80. While Im committed to replacing the water pump, how much leakage makes it critical(do it now), versus it can wait a week or so? Given the right tools and the information is this something that requires much skill/technique? I'm not as concerned about doing the water pump replacement as I am the timing belt.