Amazing I’m def going to get that!Lower humidity hatches work out better in most styrofoam incubators but I've heard of everything from no water, to a few drips of water, to not being able to get the humidity up on the Janoel 12 so I think it's going to depend on your incubator and location on that one.
I think you're on the right track with around 50, it's a good starting point since you don't know what to expect from your incubator yet. You will be able to tell if your hatch is too dry and can adjust it later if so. It's usually easier to help in a hatch that is too dry vs a hatch that is too wet.
Yes! The no-skid shelf liner is perfect for lockdown. It helps to prevent splay leg, giving the chick's little wobbly feet and legs something to hold on to and makes clean up easier.