Are you familiar with Ride With GPS? You can map segments. When you do, it will generate a profile showing grades in percentages. Here is an example I made for someone. It's the Northern Tier from Whitefish to Clark Fork.
Dashboard · Ride with GPS
The profile is at the bottom. If you put your cursor on any spot, left click and drag your mouse and then let go it will zoom in on the section you have chosen so you can see the grades better.
And without more details about your gearing and load, giving us the name of your bike doesn't help much.
As for fires, what things are like today could be drastically different tomorrow or three weeks from now. Be prepared to improvise or bail.