the next logical step...
...there has never been much logic to my choices concerning what psychedelic to take and when to take it....it's more of a do what you feel is right for you next...
If you like 4-aco-DMT though, I would definitely say check out n,n-DMT and 5-meo-DMT. A lot more intense and short lived than the 4-aco-counterpart, but it's kinda neato to compare how the differently substituted DMT molecules afffect your consciousness.