Well it depends on how bad your "addiction" was, but, honestly it sounds like a terrible idea. I mean only because it is (a) benzodiazepine(s) you are withdrawing from. With benzo dt's, they're is a risk of seizures, and if you have a significant physical dependence on benzos(either long term dependence or you we're taking large doses) then benzo withdrawal can be deadly.
But it depends, on your personal information. Their is simply not enough detail to give you a full answer. I mean if you had only a mild dependence, or even a moderate dependence for a short time, it is probably ok. But again you could have a seizure coming off of a high dose habit, and the long half-life of nordiazepam means full dr symptoms may be delayed.
So in the absence of more detail, the prudent advice is to hold off on something like this. Or perhaps use the trip to ween down to an extremely low "jumping off" dose. Luckily Valium isn't too potent, go down to 20mg per day, then 15, then 12.5, then 10, then 7.5, then 5 and maybe even 2.5, and jump.
But maybe you have already done this and I just sound stupid!