What would be, in your opinion, the best RC (in terms of safety and effectiveness) to shoot one into mind-hyperspace? In other terms, detach from physical body and navigate through mind and consciousness as a being of light and thought. Like the lucid dream space if you will. The rabbit hole.
Honestly, that reaaally depends on what you're looking for. If you like tryptamines or phens (acid, mescaline, dmt, 2cb), i would experiment with something like 2ce first, then when you get a feel for that and dosing out the rc's yourself (and being safe with them), try some of the psilocin analogs, 4-AcO-DMT is probably my favorite for "hyperspace" and is quite a bit like aya IMO, it has a very nn-dmtish vibe to it and lasts 6-7 hours
If, however, you mean you wanna be dissociated and just disconnected from "reality", try either 3 or 4-MeO-PCP, or if you can still get it (due to stupid ass legality laws), 5-MeO-DMT
edit: i just hope things like 2ce and especially the psilo analogs dont get too mainstream that they start getting scheduled =*(, the 5-MeO law was a grim reminder to me that they can pull the plug anytime and just throw whatever chems they want on the CI list.
If anything, alot of people have been eating piperazines, and since those are "abused" alot more i hope if anything gets cracked down on its those fucking things. The death of mdma (for now)