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.
For a succinct video on that subject go here: https://www.youtube.com/watch?v=Nmz1QJTDzO8
And for a comprehensive book on the subject by Tony Foale: https://motochassis.com/
He has been one of the leaders in codifying motorcycle geometry for over fifty years, and still occasionally road races.
Another luminary you may want to check out is Norman Hossack, the inventor of the Hossack front suspension.
https://www.hossack-design.com/
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.
Good luck!
Rob
