I have a feeling like I've already experienced the worst of SP as a little kid (fever induced SP, there were neon spiders crawling all over me and into my mouth, I was 6), and even a particularly frightening episode relatively recently, that I don't really have anything to fear from conscious, deliberately induced SP. xD I'm also trying to have my first WILD and I'm going in with a positive outlook as I can, so far nothing too bad has happened, be optimistic! That's the best way to ensure you don't have a bad experience.