RE: prop balancing
I used to balance them religiously. But these days I check them real quick with a fingertip balancer. As long as they aren't obviously, severely out of balance, I run them as is. If it is way out then I will spend a little time balancing it but I'll return it or toss it if it takes too much effort. I've found that APC props are usually pretty close for the most part, with only an occasional prop out of balance.