Okay so I did a bit of a timeline outline and it looks like the most you would end up with in there would be 16, assuming you are adding 4 eggs a week, and that would be when you add your forth batch and that first batch is in "lockdown". If you are hand turning, then the turning thing is not an issue since you just would not turn those eggs. The humidity is the problem, but seeing as you would only have about four hatching at a time its hard to justify buying a second incubator, though assuming you sell them all you would recoup that expense pretty quickly. It looks like pea fowl incubate at a higher humidity through out the process so that may work in your favor and you can play the actual hatch days by ear (as far as humidity goes) and use of any issues you run into with the first hatch group and make adjustments accordingly. That first batch is always iffy and stressful regardless, if its your first time hatching. Upping the humidity won't be such an issue with the second batch that you put in, but the third batch would be subjected to the higher hatch humidity twice and I don't know if that will result in them not losing enough moisture.
ETA I just reread that. Let me know if any of that doesn't make sense and I will clarify. What I mean about the third (and subsequent) batch(es) is they will have to be in high humidity while the first batch of eggs is hatching, then again when the second batch of eggs is hatching and that may or may not pose a problem.
