by all means this all very doable yourself. we do all we can here to keep you from going to a shop. the more you learn about your car the better off you are in the long run. if you dont mind turning wrenches that is.
theres a how to here for most every job you could think of under the hood.
the pcv is a easy change out as well. if it rattles still when you shake it you can clean it with brake cleaner and reuse it 99% of the time.