The "fun" part is going to be getting the original bushing out - you might have to cut or burn out the rubber, then cut through the outer metal ring without damaging the arm.
You'll also need to build a makeshift tool you can use to press in the new bushing - at the very least, use a socket that matches the out diameter of the bushing and use a vise to carefully press in the bushing, making sure that you only put force on the metal ring of the bushing and not the rubber.
So yes, it's doable if you're reasonably competent and have all the necessary tools, but depending on how corroded the original bushing is, it's not going to be a five minute job.