it's quite easy to change 🙂
you have your rear clam off so it's not difficult 🙂
I would advise to replace the crank seal and you need a crank bolt, both about £5 each.
the lower cover/oil pump gasket is also worth the £8 or so 🙂
ps: you need to grind the cracks a little further sideways on the clam, then glass fibre and make sure there is no air bubbles or they will explode when baked in the spray booth after painting