Well i really like the 2 last cleans. But the first two were just okay. I mean it's a little bit to dark.
Here is what my cleans for one of those pages would look like:

It would have been more blurred if bigger. but still relatively the same.
Anyways over all i say you should assign Jaion to the project for the second cleans.

Topaz denoise and clean, and gaussian blurr.
But i haven't really played with it to see the best product yet. so that was just what manga's usually need. it turned out okay.
Anyways i did the following steps.
I guassian blurred it resized it to size 1200. Then topaz denoised it: denoise~ 1 Retaining detail ~ 0.45
Then i sharpened it.
Then used topaz clean.
But like i said i haven't really played with this one. i just did a quick run over it in five minutes.