Thanks for the advice everyone. I don't think HPS is a good idea due to the added electricity costs, as well as the heat. I live in Southern California, and it will be in the 90's - 115 degrees with very low humidity. So I think LED's probably are the way to go, and I probably will need a humidifier.
I've put in well over 100 hours of research. Watched countless hours of videos on youtube, read tons of articles, and forum posts. I'm still quite confused due to all the people who have different opinions.
While I don't want to drop a lot of money on the first grow, I also don't want to knowingly go into it buying stuff that will only be used for the first grow when I discover it isn't good enough. I am starting with autos that don't get very tall, and LST looks pretty strait forward, and if I eventually go with non-autos, it looks like I can top them as well as LST and SCROG to keep the height down. But, if I am definitely going to need a tent taller than 60in, I'd probably be better off dropping that extra $100 or so on it now since I don't have space for 2 tents.
I've been thinking about making a "space bucket" if I just grow one at a time, but I'm not sure if that is a great way to go.