humidity around 60%-80% is ok?

The thing with high humidty is, if your ambient get to cold it will cost ya a RI. Keeping it lower until shed is much safer! Unless you can keep it at 82+/- ambient with 70+ humidty

yes it is

i keep my humidity 60-70 and when she needs to shed i bump it up to 80 and sometimes 90. there's a thread around here about a guy who owns boas and other snakeys and he keeps all his racks at 90 and hasn't has a problem.

also, i've been told that if the humidity is high enough for you to see condensation on the glass, that's when you should worry about an RI.

my 2cents! :>