SW lists some Yo! Sushi foods on the website, but none of these are there. I've also tried searching for them under another brand name to get an average syn value, but can't find specific foods for the top 2, and the last one I can only find chicken katsu, but as it's only that that'll be different (I assume?) I would keep the syns the same. Katsu curry usually ranges between 15-26 syns, so I would account for at least 20 if I were you.
The only yasai listings I could find are these
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