You helped me because you did it here. You let them get to 4-5 inches, then move them outside in a shaded area. I will plant the seeds in December, since it said start them 8 weeks before putting them out, and when they are that tall, will put them in the small outdoor greenhouse to keep them warmish and get used to the outside.
It’s the same process for everything I start as seeds, which is mostly maters and peppers. I use bottom heat to trick the seeds into thinking it is spring and time to germinate by warming the soil. My germinator/incubator(aka: materbator) is on my FR homepage. It has worked well for about 5yrs. I really need to build a new and improved version since the first was kinda thrown together in a hurry.