The mimosa particles will hold lye, you might not get it all out even if you're super careful and it looks good.

I don't know how well the plastic bulb on basters hold up to high ph liquids, usually fine for acidic water or NPS.

I would continue as normal, do your pulls, wash the naphtha with sodium carbonate, then with pure water (both quickly), then freeze precipitate and do a re-x on your finished product.

If any of this doesn't make sense, check out the extraction page on the wiki,

read through multiple teks and the re-x and soda carb wash sections.

It is hard to be patient with your first extraction, but it pays to take your time.

Also, the chat is a good place for quick answers - or use the search function.

Good luck, be safe.

I hope it is a success!