ismene, not difficult or that dangerous. But still very illegal.
Kerosene you can swap from premium paraffin (same thing) its the final was solvents that are nasty toulene/xylene etc oh and maybe some nasty hcl fumes in making the hcl salt at the end. but you can do this outside.
but the solvents involved are nothing nastier than those used to extract dmt.
why dont ya read a little bit a learn how easy it actually is?
Nah monkey, kerosene and sulphuric acid are quite a bit nastier than drain cleaner and bartolines low odour white spirit.
You're a little out of luck with the coca tea - there was a peruvian woman selling in the UK - very reliable but then someone most have told her it was illegal because now she only posts the coca tea from Peru. Denied.