Man you're gonna be in for a treat with those 4' 3BOG's lol. Mines maybe 15". But I LST'd her.How much space and what kind of lighting? Sour Crack and Toof Decay should be smaller strains. I believe there is a thread above that details current Mephisto strains. I have 10 of the 3 Bear OG plants, supposed to be small to med size. And I have 4 of them that are over 4ft tall, 3 med sized and 3 smaller sized. None of mine would work in Micro. But the SOUR CRACKS I have are very short, they have yet to stretch, but I don't think they will stretch a ton. Good luck