Not sure I'd want to cut my teeth on an 045/056 as my first seal replacement job, but plenty of folks would probably say otherwise...., and are around here to help if ya decide to go for it. As for tools, the clutch should be removed with the proper tool and the flywheel should be pulled with the correct style puller as well.
I did a total rebuild of an 045 this past winter myself. Be more than happy to forward a service manual and IPL should you decide to take the plunge.
At least your ignition works!