Welcome to the fun. 4 times heavier. That is a lot to consider. Especially for starting. Maybe you should elaborate on why sooo heavy. By my guessing over 200 lbs for bike alone. The wheels weight is not considered because it depends on your wheels and tire you intend to use. But it could be over 300 lbs depending on what you plan to use. And getting up to speeds of 8 to 10 mph. Hope your planning on a boosting motor. Not saying it can't be done. But your parameters of extra weight does make it a challenge.What