i wouldn't worry about the valve cover gaskets, sooner or later everyones leeks. cam plug i would ignore if it isn't bad. power steering fluid, that depends on where it is, if its something simple like a hose go for it, if its the box then you should take care of it because the pump will be hurtin if all the fluid pisses out. if your power steering pump is leaking its not to big a deal as long as you can keep enough fluid to keep it from grenading or locking up (is it making noises yet?). leaks come with having an older car, keep your fluids topped off and it will last you until your next vehicle