I definitely like the darker pencils. This could be cool inked. I think it'd require a lot of careful crosshatching or similar shading, otherwise you'll risk losing the nice range of greyscale detail you have right now.
I like the darker pencils. I think you should ink it using lots of ink. or you could ink it using photoshop like I did on my last BatGirl (although it took a long time and I think it's better to ink the right way).