Greenhouse Autos

So, first greenhouse grow in a couple of years. I did lose 3 dwarf seeds prior to starting these 3, my fault, I drowned them while germinating 😬 So far so good with these though, looking nice and healthy. They were germinating with the tissue method for 24 hours before planting. I'm using a John innes no2 mix, but I have planted the seeds in a small bit of reg compost to get them started. Also mixed 20% perlite into the John innes. I've decided to try LST this year and see what happens. Super excited to be be growing these dwarve. Any recommendations to use flowering feeds or not?