Something to consider is the type of driving you'll be doing. If you’re going out to do some performance driving or racing, yea it might be worth investing in a brake upgrade.
If you're going to be using it as a street cruiser/grocery getter like my cammer; there's nothing wrong with a properly adjusted set of non power drum brakes. Heck, last Wednesday night I had someone pull out right in front of me! Scared the $#!+ out of me, but the brakes did their job. It's a good thing I was a brake tech many moons ago.