Just installed new bearings on my 350f (All-balls kit) last weekend, and this link was very very helpful. Thanks for sharing!
I used the smaller spacer (of the 2 options) at the bottom after measurement of the bearing, spacer and seal stack as described in the link.
At the top, I was able to use the seal, spacer (as All-balls manual describes) and top nut with the curved down cover attached.
Agreed, there is much less thread left than originally, but still a comfortable 1,5-2 full turns. Enough to properly tighten it down.