RC for techno/house party ( not rave )

Hello, im going to a tech house party, what rc would you recomend?

I dont wanna take MDMA, cause i will roll in a few weeks and im trying to follow the 3 month rule .

The party will last until 6am. In my area its really dificult to find 2CB ( still an option , but need another in case i cant get it ).

edit: i probably gonna drink some alcohol, if its ok with the choosen RC