You got yourself some nice Arkel bags there. 56 liters of bag capacity plus whatever you can stack on top of the rack. You will be fine. Depending on the time of year, you can save LOTS of room and weight with a hammock. and the route you should be following will have LOTS and LOTS of trees. You can't count on the frequency of convenient stores personally. I always bring Beef jerky, Ramen noodles a jetboil, Khatadin water filter (so i don't have to LUG so much water around, plus you can't really even trust the tap water from many country resources. Only need 1 WARM Layer 1 MEDIUM layer and all the rest is lightweight under-layers. though I typically over pack from excitement alone.

You'll be fine and you will have one of the greatest experiences of your life. Are you going with somebody or by yourself? Try packing your bike and riding it a couple time before the trip. Make sure you are not Seriuously overpacking in the back with no weight in the front. You will notice going uphills and starting every time.