I just try to space them out a bit, ideally, benzo first then a couple hours later adderall so they don't affect eachother as much. I also take 2 or 3 days off a week to avoid any tolerance/dependence. It's the only way I can function/hold a job/leave the apartment. Its too bad it's hard to get both prescribed at the same time; it buys me about 5 hours of feeling normal and social.
Everyone has different reactions and experienced with different drugs of course, but in my 4 years of experience with the two I can't really say too much against them, just take a few days off to avoid tolerance.