Oil clarification

[pidj]

I have a 2001S that had a professional oil change just prior to purchase. I've driven about 600kms on the car so far and checking the oil is leaving me confused. The gauge shows it beyond the markers and the dipstick doesn't show a defined area with the oil (it's still quite clean) - the entire dipstick section is wet with oil. Does this vehicle have too much oil in it?!? There are no codes, smoke etc. sometimes the idle will wander between 800 and 600 but nothing else.

Thanks!