Quandary - which way to go

Afternoon all, I'm playing around planning a possible Kimberley trip this coming year, my quandary is whether to take the Buchanan Highway all the way from the Stuart Hwy to Timber Creek or cut into Gregory National Pk near Victoria River Downs and not bother in checking out Charles crossing & Jasper Gorge?
Any suggestions and advice would be greatly appreciated.

Cheers

Dunc