I would figure the engine on your bike is between 150 cc to 250. This is way too small to go through the steep slopes but, then again, a bigger bike could be too heavy for you if it falls on the ground. But this is a life-time memory and you are exceptionally brave !
150 cc engine bike is suitable and ideal for female rider, , the bike is light weight as 100---130 kg, easy to lift up when it fall, especially when you travel in a team of 2, a piece of cake to lift.