Don't forget a parting tool and a bowl gouge- 3/8" (which is what Sorby and the other UK manufacturers call a gouge made of 1/2" bar stock) is the best all around size to go with that setup.

Other than that, looks like you've got the bases covered.

Price check the Sorby on Amazon. Even with the Woodcraft sale, some of it is coming out ahead on Amazon:

https://www.amazon.com/Robert-Sorby-840H-Spindle-Gouge/dp/B0036B67ZM