First Outdoor Grow (Ontario)!

This will be my first outdoor grow and even though I'm just starting the seeds I've already messed up! Its day 3 from putting my seeds in soil (which I learned after I should be mixing with Perlite, my first mistake) and I'm thinking that at the rate at which the plants are growing (~1cm/day) they will grow too close to the light within the next week or so😢. I thought about transplanting them to something smaller but I fear the sock of that will be pointless. I know my germination green house is kinda "cheap" but it's all I can afford on this nursing student budget aha. If anyone has some ideas/ recommendations of what I should/try do I'd greatly appreciate it.

Some of the peaches could be males I don't know yet but I'm just keeping my finger crossed. I also have a new light coming in this week so hopefully that helps. As for the mutated plant, I have no idea what to do, any advice would be greatly appreciated. Otherwise the other plants are doing great and growing well in their bags :)

Sorry for the late upload, i've been super busy with exams. I bought a new Mars Hydro TSW 2000 which I hope helps. This week has been a rough though, I started nutes at 1/4- 1/2 the recommend amount and thought all was okay until I checked on them a few days later and some of there leaves were starting to die! I felt the soil and it was extremely dry so I don't know if they were just thirsty but I stopped all nutrients of course until I can figure out what killing them. Im feeding them tap water with a splash of lime juice to bring the pH down closer to 6 until my digital pH meter come in later this week and I can figure out how to reintroduce nutes. I hope I didn't cause too much damage to my plants. Im also waiting for my "CALiMAGic" to come in so hopefully il be able to introduce that to them soon. As you can tell from the photos they growing well however I don't know when I should transplant them or start topping them or even start LST? Does anyone have any experience with Mars Hydro? Is my light too close/ too far? This is my first grow so any help/ comments would be greatly appreciated! 🙏

Sorry for the delayed updates I had to flush my plants earlier this week due to some pH issues. Now they are getting pretty big and I'm not sure what tie trim. I'll be looking into that this week. Hopefully feedings go well as they've been very sensitive tot the nutes even at a faction on the recommenced amounts. I'm also unsure of where to go next with my LST so I plan to do some more research on that this week.

Continued with LST. The humidity ran high in the tent this week which caused the pots to retain their water for quite awhile, so I'm just hoping they don't get root rot from that. In the mean time just been managing with foliar feeds so nutes varied this week.