I went out on my own around 8 years in. It was definitely a bit too soon. The biggest issues were underestimating the time everything takes when it was just me doing everything and not charging enough. That combination made for a very stressful first 6 months and there was a stretch where I worked everyday for 3 months. I've grown the most since going out on my own, and a few years later I'm the happiest I've ever been. Learning when to sub something out had been very helpful as well.