Not I sure how much this will help but... I'm in Texas which gets pretty hot, not AZ hot, but hot. As long as you buy from a local apiary I would think they would be well suited for your climate.
>1)
Pros and cons here:
http://www.bushfarms.com/beeslazy.htm#lighterboxes
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I think you also need an exit plan. If the hive gets mean, you should have a place lined up to take it to. Close it up immediately and haul it off to that place if you think that is appropriate. Then requeen. It's not fair to the neighbors (nor to beekeeping in general) to have bees chasing people down the street.
Michael, can you expand on this? I am also in a AHB area with two new hives this past spring - so far they are easy to work, but I am making sure I have a plan in place if things get ugly (the intro books I have don't really talk about that).> 3) Africanized Bee Concerns - I know we have this "problem" in Arizona. Any advice on how to keep your hive dosile?
Don't hesitate to requeen hives that are mean. Space the hives out so one hive getting aroused doesn't arouse the one next to it.
> If a hive does turn too aggressive, is re-queening a viable option to turn it back again?
I would plan to have your own to avoid the F1 cross effect which can make them outright vicious.