We use the development matters statements not the profile points as these are meant for reception. The average nursery child should be working within 40-60m+ but it depends on your catchment. Mine is very deprived and come in at a low level so my average is 30-50 perhaps dipping into 40-60 in some areas and it is only my HA children who get 40-60m. I would choose some from both 30-50 and 40-60. Remember to put in an extension for your more able as this seems to be a key thing at the moment. 20mins is a long time for nursery so keep it active. Also if my interview lesson was any thing to go by be prepared for them to be very shy and non responsive at first. It so false for both you and them and they are less able to cope with the stranger at this stage.