nothing is perfect theres going to be trade offs as you are putting a motor on a bicycle that was never ment to have a motor on it
that being said yes you will wear out chains faster with the motor then just pedaling
but it is the best way to install a motor on a multispeed bike and not use a ragjoint
and keep the rear disk brake if the bike has one
always a staton kit
but you would have to order the honda from somewhere else as honda does not want their motors to be sold on gokarts gopeds or motorized bicycle
Live life as its your last day... it just may be
Learn to do it right or how to fix it later, quicker to do it right the first time.