Nimche,
for now you and I share about the same timeline, though you got your FP almost a month earlier. I am assuming FP date + 6 to 7 weeks for the IL to arrive. If that takes longer than 8, I am getting nervous. Still, we can be reasonably sure that our test will be the old one, not that I would really get nervous about that one though.
As per BCIS web site, Sacramento is currently doing June dates, thus for me the whole thing should be done with by Mai.
It would be somewhat helpful, if there was a reference as to how many applications they are truly working on. Somehow I doubt there to be a lot of N-400 in Sacramento, might be different down south. May also be rather seasonal here due to migrant farm workers.
On the happy side, at least we are not stuck in the visa queue or have to deal with changing employers and being on a H1B and all that crap.
I feel sort of good that I am in the same boat with someone here, but what is your timeline (you may want to add it to your signature).
USCIS doesn't do plans ahead because cases are different as well as officers who are working for USCIS so there is almost no way to say when your turn is.
An example: I applied from San Diego to CSC and someone else applied one week earlier than I did to the same SC. I got my FP two months faster than she did. Now does it really matter how many cases they process per day? Sometimes I think if you are not really lucky with this process you may (will) be stuck in it for several years. I don't consider myself very lucky person when it comes to immigration but I may get my IL today.
The point is, USCIS has no basic principals to follow or direction to apply to every single employee to make sure they are getting the job done therefore almost no prediction applies to this. (That is why we put this on the wish list)