You can generally get away with just doing the oil and filter and a good visual check over, I wouldn't touch the AFM sensor, if its all working correctly leave it alone, reset the ECU if you like but again if its running fine don't bother. While you're doing the filter check for any oil around the rocker cover gaskets and head gaskets, these do fail over time. Check the intake filter and coolant level and that's about all I do.
You will have to do the cambelt at some stage in the future if it hasn't been done, generally they are due every 100,000k's