Hi.
You cant go wrong with any of that stuff.The new wave light and the gothams 4x4x7 tent looks top class.
I hate tents myself,but they do make life easier for some...
I dont have a clue why they would off gas and kill plants.
some ppl dont use proper sized extractors which could cause excessive heat build up, poss causing the offgassing.
I dont see no probs with using a 1000w in the 4x4 tent.
But i would def go for air cooled reflectors in tents.