You can do the 3 caches in any order as they are well spaced apart. Take the time if you can to walk the long way round the route if you can to see the whole park. I think there are plans to develop the park soon which will be great.
The park is very popular with dog walkers so some stealth will be required.
You are looking for a different from the norm cache container which I really hope doesn't get muggled! There is no room for anything except the log, so bring your own pen.
My GPS was affected by the trees, so I have tried my best with the coordinates, but bear in mind if you have the same you may need to widen your search.