Combine poolish (let yeast bloom first before adding flour) and let sit for an hour or two.
Combine everything except yeast, white sugar, 100g water, salt, and soaker.
Bloom 6g yeast in 100g water with sugar, while doing so mix everything else on low speed until blended then autolyse, meaning cover bowl with saran wrap and let sit for 15 minutes.
Add bloomed yeast, salt, and soaker (drain water from soaker first) and mix on low speeed.
Bulk ferment (place dough in a big bowl/bin and cover with sran wrap) for 1 hour, doing 2 - 3 folds during.
Divide, bench rest, then shape. Roll top of loaves in extra seeds before baking. Brush top with water if seeds need help sticking.