Firefox can lick my balls for not remembering what I just typed out after my connection died!
I'll keep it a bit more simple this time.
Make sure they are 100% Psilocybe mushies only. Methanol is a simple solvent, and that is a very basic extract. Theres no guarentees poisons from other species will not end up in the end product. If used on known psilocybin mushrooms only, you will end up will inactives, 4-HO-DMT and its related sisters if applicable. You could keep cleaning the product but remember after drying a mushroom, aproxx 90% of its weight is lost and then after the extraction the compound(s) are very potent. You will need scales such as those used for 2C-B and simuilar.
As a pure salt it can be active as 1-2mg. More commonly would be 10-20mg though for full effects, and this won't be pure salt, it will be a bit harder to dose and maybe cause an over dosage (bad trip, panic attacks, body load), so be careful and make sure you know what you're doing if you decide to do this.