Should be fine, weightwise. Just remember that if you haven't ridden loaded this way before, that you will need to get the feel for the handling of the scoot with the weight above the center of the scooter. If you have ridden with passengers on before, it's kind of the same thing. More ungainly at low speeds, careful in the turns. Also, just for some good reading, do a google search on "scamping", and especially on "loosegrit scamping". He has much experience in this area...
Ahh, here is an old scamping report from him:
http://49ccscoot.proboards.com/threa...eport-oct-2013