The rope looks a little loose, but if he's daring... As far as age I'm not totally sure, can't tell how big those flowers are for proportion but I'll take a wild guess and say 5-6 months...probably way wrong haha.
He looks 3-4 months to me, but could be younger or older since I can't really see anything to compare his size to. Mine don't like to walk on loose/swaying ropes/vines/plants so much. They also don't seem to like plants that are similar to that one. They prefer the bushy/leafy/branchy types and don't bother using ones that are only leaf with nothing to walk on.
My nose be, Poseidon, will climb the cord for the curtains to get from the plants in my window to his favorite perch (a bend-a-vine that hangs from a curtain rod bracket). He gets a little freaked out when it starts swinging around as he's climbing it but he still does it every time I let him roam around. I guess it just depends how bad they want to get to the other end of the rope lol.