So the timing cover is leaking and the rear main seal.
The timing cover is no big deal since your KA is chain driven and you don't have to worry about the t-belt getting soaked.
The rear main seal is more complex. You have too pull the tranny to get too it.
If your motor is a good runner, low km or freshly rebuilt I would advise fixing it. If its a smokey old bastard that's on its way out I would look for a fresher motor too swap.