Hey buddy and welcome to Bluelight! Good for you for being safe and asking the right questions. The combination of Benzodiazepines and Opioids are well-known for their potential for danger, but you're not doing anything crazy here.
All of the obvious stuff. Don't drive or do anything crazy until you know how you are going to be affected. Otherwise, just enjoy yourself and let us know if anything changes regarding situation and/or dosage.