Re: 1951 Schwinn Panther - maybe?
Well then that is a horse of a different color. If you like the smell of mixed gas and enjoy the sound of a motor then go for gas. It will certainly cost you less. Are you or your husband or a friend handy?` You might want to check with your local law enforcement people as I understand that gas motor bikes and not legal in Canada. Just noticed you are in Canada.
Regarding the electric, the batteries could go inside saddlebags and be hidden in that way. If you know someone who welds then a fake gas tank between the upper bars would be a great place to stow the battery pack and also give a vintage motorbike look.
Gas or electric, you have the makings of a great bike.
Someday when I grow up I will probably lose interest in toys with wheels, but until then...