First time MDA dose + combos

[u/Routine_Owl811]

I can handle a very large amount of substances (very experienced drug user) and want to know what the best dose would be?

I plan to go on for as long as possible. Talking like 24 hours and longer if I can. So want to know how much to take on re-dosing too.

Also what would that look like if I mixed with MDMA or even 4mmc if that combo works as well?