Electric series hybrid conversion

[snuggle.pants]

I am planning a series hybrid conversion built on a sand rail chasis, using a VW type 1 transaxel. The vehical will be 4 wheeled rwd, 2 seater. I have a glass body, doors and will install a wind shield. The GVW less than 2500 lbs should be fairly easy to attain. I want it capable of 65 mph with a range of 60 miles. Rear drum and front disc brakes. Got any ideas

Any suggestions are welcome.
Thanks, David