Yes, that's the number I had based on your earlier post. High yield but within the realm of possibility.

I don't think the mescaline salt will dissolve in hot EA. One thing that has worked for me was to dissolve in ~100 ml of hot water, base with 10g of sodium carbonate (washing soda), pull several times with EA (verify no dropplets, rest well), and salt again with citric acid.  I've done this to convert the sulfate salt to citric. This should remove whatever was in the coagulant.