To answer your "why is it so big" question... Your Dig Cam might have a setting for size output... Or try lowering the megapixels to a lower quality. thats what i have to do sometimes...
Its your car, build it how u want it..Alot of people have "Rice Dreams" and others dont... i could care less what you put on your car. Yosamite Sam "BACK OFF" mud flaps at pep boys are a nice touch!