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Nice work, the 600 is a lifesaver if you are bread knifing. If you plan on doing a lot of straitening or chip removal, a 400 Chosera is also a good investment.

I bread knife on a 325 or 600 plates...

Going from a 325 plate to a 1K is a big jump especially if you remove a lot of material it will take some work to get a 1K to produce an edge.

I like to use a progression to speed things up and...

What grit stone are you bevel setting on?

Hard to tell from the photo, but looks like there are some scratch marks on the stabilizer, perhaps the stabilizer is keeping the edge off the hone.
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