Blueberries in Greenhouse

I'm doing another guerilla grow this year 🤘 I will pick a spot far away from my house for most of the plants. Last time I used this method I lost 2 out of 3 plants. I will also hide a few plants in the garden. All the plants are only a week old, but I have just repotted them to 9-15 litre containers in a mix of perlite, coco coir, peat moss and soil. Plan is to keep them in the grow tent on a tight light schedule until they are at least 3 weeks old and then take them outside.