Thank you all for your input! I spent tens of hours researching travel insurance before I left and the options are annoyingly slim for long term travelers. Most policies require you to have a return flight. Finding policies that cover rock climbing (sport climbing) adds an additional challenge. IMG was one of very few that covered those things but I didn't realize helicopter evac wasn't included. I'll look into the American Alpine Club to see what I can find for additional coverage during the months that I'll be climbing.
I do have insurance, I just hadn't thought about med evac as an option. I use IMG's Patriot International with adventure sports rider added on. Haven't had to make a claim yet, so I hope it's good! ...Or that I never have to make one, haha