By the same token, the kid across the street rode unsupported from SoCal to Seattle with a 1x. He packed fairly light. He planned to continue to Colorado, but the weather turned bad.

40t chainring and a 10-50 cassette. If 22 gear inches work, (700 X 35), that might be the best bet. Riding in basically a middle ring.

Might be tempted to run a double with a 30t that will only get used with the lower 3rd of the cassette, (chain wrap), for those do or die circumstances. Might have to get creative to keep the 40t chainline centered on the cassette.

A 1x plus strictly bail out.

John