What would happen if i mix brights with NRG

Hey I'm mixing NRG with bright on the weekends to get higher but I was wondering if you were to be on 2 brights and take a nrg with it how high would you get. Nrg is a stimulant and brights is stimulant as well but can you only normal get that high from 2 brights if you take nrg with it.