I think your eggs look good based on your drawings, and honestly, I would not worry a whole lot. I know there are a lot of folks that have a lot more expertise on the forum than me...but I've never tracked air cells to this degree (just eyeball based on where they should be,) and never had a bad hatch from not tracking. That's not to say you shouldn't, and this is only my 2 cents bear in mind. I could also just be very lucky!
My first few hatches, I stressed a lot and everything was fine except for a few mishaps. If you follow what "should" be done to a general standpoint and don't go egregiously far from it (as in not allowing your eggs to be exposed to temps below 99 or above 102 for too long, or very excessive humidity for too long, I've found things to be successful). I've heard of certain breeds like Marans that are notoriously difficult to hatch so I've never had that experience. I've only ever hatched Ameraucanas, EEs, and now Ayam this week hopefully.
I've had to add only very tiny amounts of water to my incubator (it's also a circulated air incubator,) as our area has had high humidity. Makes things easier...but it also begs the question - how do mother birds hatch young if the humidity is 90-100% in your native area when allowing the hen to hatch?
I don't think it's a perfect science in my humble opinion based on what I've anecdotally seen with my own eyes. Please let us know how your hatch turns out!!