I can't answer your questions specifically on that incubator but I can give you some of what I've learned.
First, no matter how perfectly you have everything calibrated and stabilized before your eggs go into the incubator, your temperature and humidity will drop when you open it to put them in. DON'T PANIC....this is the stage where most people freak out and start adjusting and readjusting, then they never can get it back to that ideal environment they had before, simply because they've "overfiddled" with the settings. Remember that it takes a few minutes to get the eggs in, get them situated, and that they have a cooler total mass than the incubator is currently showing and they need time to come up to temperature. Put them in, leave them in, and leave your settings alone for several hours. The eggs will be just fine and will warm as the inside of the bater warms. Then if you need to adjust, do that in small, almost imperceptible increments.
I also preferred hand turning, even though it meant opening the incubator. I had a better hatch rate (and anyone who knows my back story knows that I wasn't doing so good before!) with hand turning. Mom gets up off the nest from time to time to shift eggs around too, and they are outside in cooler temperatures than your incubator will be in. This also gave me the opportunity to check more closely for eggs that might be seeping stuff that indicates it's time to get them the heck out of there!
Your chicks won't instantly die inside the eggs if you have to open it to add to the humidity or turn them. Again, they have an internal mass that doesn't cool off or dry out the second the door is opened. Be sensible, keep it as closed as possible as much as possible, but don't be afraid to tend them and do what you have to do.
Most incubators have cool spots and hotter spots. When you turn the eggs, it doesn't hurt a thing to shift eggs from place to place as well. Find those spots, and work within those parameters. Under a broody, the eggs that are at the very edge of her "warming cone" when she first starts incubating them usually still hatch, because when she turns them or gets up for a bite to eat or a drink, they shift positions slightly with her movements.
Shipped eggs typically don't do as well, so expect that if your eggs are being shipped. The embryos have been jostled around and air cells can become loose or even totally detached. So wait a couple of days before you put them into the incubator, without touching them, and some of those cells may well firm back up.
That's all I can think of for right now......enjoy your adventure!