It just seems much smarter to accept and realize that you can't really do it safely unless you could actually be fully restrained if necessary - usually it's not very easy for people to take all those precautions mentioned to make sure that you don't OD or black out and flip out and do fucked up random things, worse than Ambien apparently. I get that you want new experiences (I was or am addicted to new experiences, experimenting, exploring, novelty etc - in theory psychedelics hit a "button" in the brain for experience of novelty feelings like feeling as if you are doing something for the very first time or bewondered like a child)...
I tried a lot of things too in search of that, and while I did have interesting and worthwhile experiences for a part.. i can also see that I tried stupid things to either challenge myself or make things weird and interesting, and it wasn't all that cracked up to be. Similarly i lost the magic entirely with dissociatives and trust me it is better to accept that fact than to try and make harder dissociatives into something they are not. Drugs have a way of showing you that you can't force certain things like that and that abuse often does not go unpunished.
No offense, but it would in my opinion be foolish to try and make deliriants into something they are not, just because you are looking for something you lost and just want it really badly.
Don't talk yourself into a fixation on them. Disregarding this really seems like asking for trouble to me.
Sorry you are running out of options but try considering other ones. Have you tried Amanita muscaria? I think the safer way to deliriants is to look for pseudo-deliriants although even those like fly agarics can be tricky and it is still best to make a homogenous product before titrating and experimenting.