Seeking advice for keeping safe with a large cocktail

[Schwag]

Swim says:

Ok. So my birthday is coming up on Monday here... I have planned a massive cocktail to treat myself. I plan to wake up around 7 in the morning and eat a mix of MDA/MDMA. I am then going to have some Opium tea at about 10 shortly followed by some Amph to tail end the MD's. I have some Ketamine and Nitrous to do as well, I had planned to do throughout the entire experience. I also have some GHB I was considering throwing into the mix, but not sure where. I had planned to end the night with some Heroin around ten to twelve.

I am mostly wondering will there be any complications or unwanted interactions? About how much of an increase in H dose should I have due to the tolerance from O tea? I have a low Opiate tolerance to start with. Any health concerns or drugs I should definitely not include. Any other thoughts are greatly appreciated. Thanks everyone.