I would sow about 8-10 seeds into 3-4 inch pots at a depth of about 1/4 of an inch.
prick them out individually into 4 inch pots when big enough to handle to grow on.
Be careful not to damage the stems during transplanting, hold the seed leaf in one hand while teasing out the roots with the other.
I go with chip-chopper. Yes, you eventually end up with 1 per pot (sigh...)
I'm remembering living in France when I used to scrape a bit of soil and trickle the seeds into a couple of trenches..:(