Save it. Valium greatly reduces its effects. And good LSD doesn't really have much of a body high, shitty acid can have some body load, but it's not pleasant and, therefore, not something to seek. Also, I'd suggest 3+ hits, this was my first dose (and they were strong hits), and I couldn't have been more happy with my decision to go all out. However, I'm sure others will disagree with this, especially if you haven't had experience with psychs before (I'd already done shrooms quite a few times before my first acid trip), but I'd say at least 2 hits would be a better starting dose.