Ahh good sir you are a wise one! Lucky for me I'm well clear of the US and seeds can get to me from Amsterdam in a matter or days for not a whole lot. I can get any major seed company's top strains (DNA, Greenhouse, Barneys etc etc) for about $60 (that is the reserva privada seeds so to speak). LA Woman from DNA has caught my eye in particular and I can get 6 seeds to my door for $60 no problems. This is the issue I'm having. I'm lucky enough to live in a part of the world where I can get my hands on all the best seeds . . . but most of the grow info comes from the US so it's all about bagseed (which just does not happen here, I've honestly never once got bagseed in my many many years) so basically I have to buy seeds in and I only have room for two plants *sigh*
I guess if I could grow a lot I could just emulate the effect by just packing more haha.

Right so we've got an answer - If I try to grow top drawer strains, I will kill it . . . so for a six foot growspace, a big ole'bucket, some lovely 400Watt lamps, some quality hummus soil and whatever nutrients I need to throw at it to keep it alive what would you recommend I grow and how tall to?

P.S. Checked out your trainwreck grow, she's beautiful, congrats!