Depending on your planned route I would much prefer to see you with the 1:25k sheets Geehi and Perisher to cover the Rolling Grounds and Main Range where rain and cloud can cause serious navigational problems. Add Jagungal if you are going cross country to Schlink. This is where you need the best available maps. These sections can seem very easy in good weather but even intermittent cloud etc can change their difficulty to severe very quickly.
I wouldn't bother with maps other than Chapman for the section from 4 mile hut to Mackays, it is spread over 4 1:25k sheets and is all fire trail. The track down to 4 mile hut is marked from the saddle.
If planning on doing the Pilot or the Cobberas get the Victorian 1:25k 8524-3-N Cobberas North sheet. This is the best map for those off track sections if doing them.
"Perfection is attained not when there is nothing more to add, but when there is nothing more to remove".