Make sure you try reaching vagamon before 9am has once it becomes sunny then riding gets more difficult. The cycle I used was a GIANT SCR 2 road bike and it helped me keep a steady pace while ascending but while descending from Vagamon I kept wishing i had an MTB due to the bad condition of the road. A hybrid with suspension such as the GIANT Roam 3 bicycle would be the ideal choice I feel for this type of roads without breaking your efficiency. Have adequate short eats such as cashew nuts, energy bars, chocolates,electrolyte mix( in case you feel extremely dehydrated).
Its better to halt in Vagamon and enjoy the various tourist spots such as the pine forest, kurishumala, diary farms etc. If your going with friends, then zostel Vagamon would be the best choice to have a good time and also meet like minded people.