half a gram does sound stupid, but honestly, i think anyone could handle it.
unless you are sensitive to serotonin syndrome.
when it comes to pills, xtc, mdma...etc
take your shit in moderation, dont take anymore that night after you have dropped your mdma....NO MATTER HOW MUCH YOUR MIND WILL TELL YOU TO (if it desires)
you know how cannabis can be addicting mentally, not physically?
mdma is the same way but a little worse.
dont take mdma like you would smoking a bowl/joint....
but to answer your question....200-300 mgs would be perfect to suffice. (2-3 tenths of a gram - 0.2 g - 0.3 g)
around where i live, we have SHIT molly. the pills are awesome though.
but when we get molly, it ranges 80-120 bucks a gram. no matter how good it is.