I think that the number of off-street parking spaces is inadequate for the usage intensity. If the carpark is full, it is a long way up Old Northern Rd in either direction before there is any street parking.
Consideration needs to be given to this. Some players will have 2 parents in 2 cars, so this will add to parking requirements. In my experience as a parent taking children to sporting events, there is never enough parking. A 10 minute buffer doesn't allow for parents who stop to chat to others after the game, or parents who stay longer because they have children in multiple games across different age groups. Lorien Novalis will need to lock their gates because parents trying to get to a game on time will park anywhere they can, or will pull into a neighbouring driveway to let their kids out of the car to run in.
There should also be consideration given to the safety of pedestrians. If a parent drops off a child on the western side of the road because the carpark is full, that child should be able to cross the road safely.