I wouldn't bark up that tree, seeing as muscimol and ibotenic acid work as deleriants. If we know anything about deleriants, is that it's probably pretty easy to die. (Jamestown, Jimsonweed[datura], not only did people OD, they became violent. I believe some people got murdered too.)
Now I'd say between Datura and Amanita, I'd pick amanita, but then again.. I have a relative sense of delayed gratifcation.
If you're a seasoned spiritual user pf entheogens, they have a shamanic history, you might want to pursue them. Baking them increases their potency, unlike psilocybes.
the muscarine will give you the negative side effects: nause,chills, excessive salivation,sweating, etc. Can't really be prevented.
I would personally just wait for a paycheck and set a quality mushroom grower's op. I grew an awesome set. Amazonian. 1g and you're set, no negatives. pantherinas do have mo ibo btw, so if you do buy them, get those, go slowly, like it's your first time drinking and you're 90 lbs with and empty stomach...