Motorcycle geometry is a very complex subject, and just guessing at the location and mounting of the various components is a good way to discover just how difficult it is to get right.
First, do not mount the motor in the rear wheel: the unsprung weight has a significant effect on the compliance of the rear suspension, also causes excessive squat in the rear when the throttle is closed, and the reverse when the throttle is applied, making a smooth transition from on / off quite difficult.
I have made several front suspensions using his concepts, and there are significant advantages to it. In fact, BMW introduced a motorcycle using his design under license, called "Duolever", and Honda is using a similar front suspension on their latest Gold Wing, which is just different enough to skirt his patents. He stated that their efforts with his concepts were a vindication of his design.
My advice is to get a less expensive CAD program and play with it until you have a good grasp of the basics. My preference is Punch! ViaCAD 2D / 3D. It's a good starting program, and since I bought it about twenty years ago it has earned well in excess of 1,000 times it initial cost. Of course Solidworks is the industry standard, but you never own it ... the costs keep piling up!
My qualifications as regards motorcycles started when I was three years old, and continues to this day, spanning over sixty years, riding, roadracing, building from the ground up, modifying, and race prepping motorcycles. Cumulatively 800,000 miles on the street and track. And I have the scars to prove it.
I already read this book:https://books.google.ro/books/about/Motorcycle_Handling_and_Chassis_Design.html?id=84hF-qoR5I8C&redir_esc=yA...
For a rigid frame or a motorcycle, a hub motor drive will have no real-world influence on handling provided it's only used on the rear wheel and the weight distribution is evenly divided between front and rear wheels. Put a hub motor in the front and you're going to have something terrifying to ride (and end up crashing). Motorcycles are very sensitive to polar moment and weight distribution. A hub motor drive is going to severly compromise suspension function that's oriented towards off-road use (long travel suspension).