I don't know when your tour is planned but if you're on a budget I'd wait for the Decathlon Riverside brand relaunch (June 2020). You can see the different prototypes on IG.
I know it's flat bars but they have invested a lot of money into it and it's going to be better value for money than the bikes you have mentioned.
2020 I plan a month in the Caucasus (Georgia and Armenia), America is plan for 2021.
Do I see it right that the Riversides are all alloy frame & alloy fork?
I don't know when your tour is planned but if you're on a budget I'd wait for the Decathlon Riverside brand relaunch (June 2020). You can see the different prototypes on IG.
I know it's flat bars but they have invested a lot of money into it and it's going to be better value for money than the bikes you have mentioned.