It's not that bad. Just keep changing the oil and flushing the fluids based on time, and don't reset the OBC until it actually tells you that you've come due for a service. When that happens, perform the service that's come due and then reset the OBC.

One note, though - if you keep the car for a long time and continue to accumulate miles as slowly as you're currently doing, you'll have to customize the maintenance schedule a little bit. For example, your supercharger drive belt isn't due to be changed until "Inspection II", but at the rate you're going that might take 30 years, which would be a little bit excessive.