Lol is personally would buy the tent first. Just because.you can always find something to make it work. It's like do you buy the.house, or the furnature first? Id worry about a house for my babies first, the rest will come together. You can use florescent lights and a house fan for now. That's what I did for.my first grow nd it turned out fine. My leaves were.a.bit sketchy looking cuz they got bugs three weeks before harvest. But the bud turned out good. Veged under florescent and then flowered under hps. But I guess you could just get the light first, then make a space for them wit some plastic and two by fours get your carpenter on! Lol if you build the.space you could insulate it better than a tent. Don't be intimidated by the BUILD either. My boyfriend, his dad, and I built my room. Got pics of that too if you want ideas. It was fun as hell to see it all come together! Either way good luck nd keep us posted, or let us know how it goes