Oh goodness yes you should be able to tour just fine with your intended set-up. When I was in my twenties, I was considered the odd-bird for having a low gear all the way down to 27 inches, and that was for very heavy loaded bike-packing in the Rockies, Sierra and Pacific Coast Range (steeper and higher than what you will see). My wife used the same gear range without difficulty.

Most folks don't need sub-twenty inch gears to get up hills. Sometimes it can be ever so slightly easier to have super low gears, but not by enough to cancel a trip or get a new bike over.