Advice of current stash/ confused on what to pick from my vendor

Hello everyone.
i just stumbled on this forum and i want to say a big ‘ thank you‘ to the creators of this forum.
I am not a rookie in this RC world, neither am i a SAGE, but i am somewhere in between and i am willing to learn and open to any wise suggestions. i have been exploring RCs since 2020 but i existed the scene due to my job and family. I had the resurgence of interest to explore reasonably and safely in 2020 and i have been good ever since till date.

My big question is goes : I manage to secure some of my old time favorite RCs since a lot disappeared after the ban. my current stash include some
APiHP
NEP
MDPV
COKE
4-Ho-DiPT
25I‑NBOMe
Etizolam
4MMC and 3CMC

I am looking for a perfect combination that would yield peak euphoria without much risk. i know there are some classes of RC you should never mix.

SECOND QUESTION … i use etizolam for sleep but my vendor carries other interesting benzos like..
Bromazolam
Flualprazolam
Clonazolam
Diclazepam
Flubromazolam
Flubromazepam
Pyrazolam.

which of these would enhance sleep better ? ( without the risk of blacking out and delusion of sobriety) i am looking at allocating 8-10 hrs of uninterrupted sleep.