Swapping a roller on a bottom bracket is within reach for most people with the right clamps and a torsion spring that's properly secured - it's a bolt, a bracket, and a few minutes. The middle and top rollers are a different story, because you're working the door up in the track while it's under spring tension, and a door this old with worn hardware doesn't always behave the way a newer one would.
If your track has gone oval from years of steel rollers grinding against it, a roller swap alone won't fix the noise - you're looking at track replacement too, and that's not a one-person job with hand tools. We'd rather tell you that up front than have you buy a bag of rollers that don't solve the actual problem.