ATCkit Makes sense to me. Though I have not gone through the whole contract and I am sure there are other clauses you need to consider. For example, there are some other points I recall being mentioned like a minimum word count per month. These other clauses are worth looking into, because maybe you don't want to be held to a minimum. Maybe you like the flexibility of having an off-month or a going back and editing-month or creating a plot outline for future arcs. Or maybe you have advanced chapters for patreon supporters and are not sure you can keep that supply sustainable and also meet the minimum requirements while maintaining your commitment to these patreon supporters who might be giving you more financial support than the company. And that is just one of the clauses.
TL:DR version: Consider each and every clause of this contract and see if it is something you are comfortable with. Maybe the example I gave would actually be a plus in your mind as maybe you are the type of person who thrives with this external pressure? However, maybe there is a clause that has not been mentioned in this post that will trip you up in the future (e.g. morality clause, or if you want another author to "inherit" and continue your novel but webnovel does not allow it).
As mentioned in earlier posts, it depends on what you are willing to accept. If I was considering a contract with webnovel I would:
1) read through the ENTIRE contract, preferably with a lawyer;
2) determine if you are comfortable with ALL of the clauses; and
3) if you are serious about doing this for money, check out the competing sites (e.g. Penana, Wattpad, RoyalRoad, etc.) and see if they might be able to offer you something you prefer. Though how you make money on those sites is slightly different from webnovel.
Whatever you choose, you can then be assured that it was the best option available to you at the time. Hope this helps and sorry it was not more concise.