^^Lex, everyone takes acid for different reasons man. If I ever have kids you're damn right I'll still be tripping. It's not like he suggested tripping in front of/with his children. The changes I experience from psychs are usually shit like, a new appreciation for a band, or a sudden decision to quit pot for a while, or pick up a new hobby I didn't know I'd like before. I seriously see no reason why children should inhibit one's ability to trip as long as they are safe and care is taken to leave them out of the experience.
Back to the topic, I personally enjoy just doing some cleaning beforehand, and I try to eat healthier than normal in the days prior, and eat healthy snacks during the trip. I usually pick an exact time when I want to be ready to drop, and stick to it. I ensure I don't have any obligations that could take me out of my trip. As for music, I find it more entertaining to pick albums in the moment than to set up a playlist (plus I like album experiences better than jumping around with a playlist). I also clean all my weed stuff so I can have a nice fresh toking experience. If I plan to toke I ensure I've got at least a gram of weed saved back. Hmmm what else... I let my girlfriend know I won't be answering my phone most of the day. I ensure my pet snake and pet guinea pig have clean cages so they'll be happy.
That's all I can think of. For the most part I focus on diet and cleaning, as they are, I have found, the most important aspects to be concerned with for my trips. Having plans often ruins the wonder and awe of discovery I feel, so I try to let my trips flow naturally these days.