^^^This. Often times taking 4 pills is just as effective as taking 2 (just random numbers i'm throwiing out there, but you catch my drift). That is why spacing out the doses over a couple of days is recommended.
Also, to have a better experience from the valium it is just as important do activities that will make for a better experience, rather than just trying ways to potentiate the drug.
So since it is used to take away anxiety, then maybe use this opportunity to do things that you are usually nervous about. O.K so I see that your from western NY. It has been really hot out, so maybe goto a lake or whatever and talk to some girls there. Many people find that with a moderate dose, that talking to people that you are interested in (sexually) becomes a lot easier. Just try not to take too heavy of a dose. You may also want to goto a mall or some place where there are a decent amount of people, and just socialize (again, always good to talk to some attractive females or whatever).
I get muchies from benzos, so maybe get a nice ice cream sundae or some refreshing munchie food.
If you just pop a bunch of valium and expect some great euphoria, it most likely isn't going to happen. Instead you will just feel tired. So that is why you need to put yourself in situations that allow for the drug to do what it does best.... Loosen you up and chill in situations that are normally socially awkward or nerve racking. Use it as a way to create some fun for the rest of the summer. Network, get some numbers, and just be friendly. You can start the summer off with a bang, in every sense of the word.
With benzos you don't really get euphoria from the pills, you get the euphoria and recreational value from what you do after taking the pill.
Have fun, and be safe.