I'm worried about trying acid. Is it safe to do it in a controlled environment?
Yes of course, there's no environment safer and it isn't exactly dangerous anyway.
The thing with Acid/hallucinogens is that prior to tripping your brain hasn't experienced hallucination and the first time (i mean every time really but particularly the 1st) is pretty hectic, simply because it's like nothing you've ever experienced or could picture in your head.
Just make sure you feel comfortable when you do it, if you feel anxious or sketch then don't do it, also have some SUPER chilled music ready because music controls your entire world, don't listen to anything fast/loud/dubsteppykindastuff or it will just sketch you out.