That will be cool. Let's see 1/2 will most likely be roos so 20 or so pullets. Ohh, I'm counting my chicks before they hatch.that should be about right, you brought 4 dozen, plus teh 18 count that you bought. so out of that you should get about 40-47 since only 3 of teh bought eggs were fertile and there were 4 of yours that weren't so had 47 fertile. I expect about 90-95% hatch rate as not all make teh last day or two for one reason or another.
Don't have the eggs from Iowa yet. Maybe tomorrow.....at least those have been laid.