Last year I replaced the cam and crank sensors. Over winter I changed the oil, filter, spark plugs, coil packs, and wires.
If they are not causing problems why replace the cam and crank sensors, spark plugs, coil packs, and wires.
Money wasted, if it ain't broke don't fix it.
It has not got a lot of miles on it.
The original battery was a Varta, I doubt that is what is in the car. Great batteries though.