I just don't know about dry incubation,
If when the temp stabilizes the humidity drops to 12% and I can get it up to 65% for last few days but I don't know if it will work being so low for the first 18 days
You will just have to experiment with the humidity, don't worry too much and have fun. Get a good hygrometer or thermometer/hygrometer and use it as a wet bulb. You can get one through the GQF website and the wicks for it. I have a chart for the readings on another computer and will post it. I think that is the most accurate. What kind of incubator do you have? This is just my opinion.
My last hatch... My humidity was around 20% most of time until lock down when I raised it to 65 - 70%.
All good advice... for sure experiment... for sure keep notes... for sure do what works for you...
BUT you need some place to start! This is my first time also (I'm on day 5) and the guy I got my eggs from told me 30-45% on days 1-18 and then up to 50-65% for lock down. This was pretty much comfirmed by several BYCers. SO... that's where I am starting.