yeah on that kind of dose i would recommend having the whole trip thought out one sitter who could subdue you if needed, maybe a packet of valium handy i would also recommend doing it at your own home.
Albert Hoffman would take 1000 mics of pure 25 and sit at home in his room in his rocking chair facing the window, and his wife would make sure he was Un-interupted.
but for years he took daily doses of lsd at minimum threshold doses like 20-50 mics, so his mind was working on lsd but he felt no residual effects. till one day he said he was cured and never had to take it again....
i reckon you could blow up if you stood on a crack at a dose of 1200mics. they say at these doses the trip is different- like plane propellers when they reach speed they seem to be slowing down and reversing.
ive been apart of the Psychedelic community for a long time now, and with lsd ive found real good acid can be better than a real high dose of less quality stuff talking of micro-grams here.
i have a star micro dot waiting for summer bush doof hippy festival

big crystal meant to be 800mics.
Always can take heaps more at a bush doof i put it down to ya have to rise past the already awesome Vibration.
i have heard, but not sure, that 1200mics of LSD is the limit to what the human body can process, and that anything over this will just prolong the effects.?
most ive had in one dose would be about 850-900 mics, i get my stuff liquid or crystal off of israelis they have the best LSD.
but i have had better trips off a single dose of LSD 25. its different like the lsd is in every cell sweating out of ya pores. like an extra layer of trip very thick buzz.
to date though my best dose is 2 good tabs and when thats reaching peak down a good dose of 2ce, my eyes where spraying food dye out onto the crowd and i heard every instrument known to man, at least thats what the trip was.
i have also had a bunch of bad trips terrifying, ive died and been caught in an alternate reality..Test., been chased by swamp creatures and phantoms, had demon shadows swinging thru trees after me, thought people could hear my screaming thoughts
Just couldnt switch off when the trip came on, and brain kept trying to rationalise the trip - impossible.
good advise if you can.
When in doubt, relax, Turn oFF and FloaT DoWn Stream
but ive had soo so many more beautiful loving awesome trips gotta take the bad with the good averyone faces their demons at some stage in some way psychedelics just push the fact to the surface, its all stuff from inside - we need to get out
-Just remember that its all in your HEAD