I am hopefully going to be getting my first moped in a few weeks, and I would like to get one that could handle a skinny friend on the back, in case i ever need to cart someone around. How rough is it on the moped if it is carrying say 300 lbs of passenger? Are there some peds that are better at handling 2 riders? Can I put different shocks on it or something like that to icompensate for the extra weight? Thanks for the help.