im not into growing so i cant help you really as far as that part of the question goes but i do have some advice to offer up. Iv been smoking for a few years & have come across many a crazy sativa *and many not so crazy "supposed" sativa that are soo not sativa* . One my of fav's would have to be true/real trainwreck, jack harer a great one too but is rare 2 find & probably not 100% sativa. Sour D is a beautiful thing also, still not 100% but whatever. C-99 may be one of the best sativa's to my understanding but is hard to order & had originally stirred up a big vault of drama, hope this helps. i suggest you stay away from anything 100% sativa since that will be a biotch to finish & will probably take many months, a hybrid(mostly sativa) is probably going to treat you better.