If you really are lego batman ... 'master-build' it
Seriously if it not in direct sunlight thick wide pine should be OK. Pine is easy enough to 'distress' and stain.
I do think you need a wide and thick profile. with the planks too narrow the door will look too 'busy' and you don't want them too thin either as then it will look flimsy.
Recycled native timber looks great but it might be difficult to find in a wide and thick profile. Most of what you do see is either floor boards or framing timber. It's also a to work with.
Rimu is an awesome timber to work with. Seems stable, not to hard or soft, . I actually hate using pine as it is too soft and prone to warping.