This question cannot be answered safely. It is entirely dependent upon your personal tolerance to these substances. These substances can be mixed, but the effects are compounding as they all exert effect on the gaba system in some way. There is a high likelihood of overdose and/or blacking out. So, again, it is entirely dependent upon your personal tolerance and experience with these drugs. No one is going to tell you it's safe to take these in combination, especially without listed dosages and history.
I have, and do so regularly, combine various gabapentinoids, benzodiazepines, and alcohol, but I know my doses and I know my tolerance, and I'm not claiming it's safe... it's a habit more than anything.
General advice is to avoid. Be safe.