Are you still looking for a digital inker for your comic?
As far as payment goes, you should consider how many hours you expect the artist to spend working on each page and come up with a price that equates to at least minimum wage. 20 pages every 2 weeks would take any artist a considerable amount of time.
Am I possibly interested if you're still looking. Here's my comic https://tapastic.com/episode/77755 if you're still looking. The first five pages and the latest chapter would be the most accurate depiction of my current ink work. While my comic is traditional, my ink looks about the same when I do it digitally.