Im trying to get my grow room stuf ftogether slowly and I need to get some pots. I plan to germinate my seeds in papertowels, then place them in rockwool cubes. After that I want to put them into thier final homes. What size net pots should I use? Please give me a size recomendation for 2ft, 3ft, and 4ft plants. I might want to grow bigger or smaller later on... Thanks!