Either one would have its advantages to start on.The electric would definatly be easier on your fingers,but as said ,then you neeed an amp,cables etc.As for an acoustic,it will be harder to play somewhat,but if you ever get an electric afterwards,your hand strength will be more than sufficiant to tear it up.Whatever you get,look for something that has good action [strings fairly close to the fretts but dosnt buzz when playing]and even though it wont be the most expensive guitar in the world,Id look for something you plan on keeping.If you figure out what you want,take the dollar amount ,and look at used instead of new,you should be able to get something pretty nice,
Best of luck !!!!!!