Welcome! 
While the announcement of a plan to convert a particular model of vehicle usually leads to discussion of the other examples of the model already converted, I don't recall anyone doing even an XJ Cherokee, let alone a Comanche. If you proceed with the project, I suggest that you consider a long-bed truck: although long wheelbase is not generally desirable off-road, and the extra rear overhang is unfortunate, the extra 175 mm (7") of wheelbase might be valuable battery space. But that's detail for later...
While the announcement of a plan to convert a particular model of vehicle usually leads to discussion of the other examples of the model already converted, I don't recall anyone doing even an XJ Cherokee, let alone a Comanche. If you proceed with the project, I suggest that you consider a long-bed truck: although long wheelbase is not generally desirable off-road, and the extra rear overhang is unfortunate, the extra 175 mm (7") of wheelbase might be valuable battery space. But that's detail for later...