I would guess that asking her if she would hatch 3-5 eggs, that that would be too few to be worth it for her, or too much hassle? Since she said she doesn't have time to raise them, I'd have to take all that hatch.
See if the person will sell you fertile eggs,, Then you have 3 options. Get a small incubator. Find someone near you that can incubate the eggs with their batch,, Wait for one of your hens to go broody.
Last option is slightly risky, since you are not sure of when a hen will go broody,, and
will stay broody the total duration to hatch out.
In my opinion,, best choice would be a small incubator.
If you can budget the NR360, that would be an excellent option,, since these incubators have excellent reviews.

Then keep hatching from your hens, and sell the chicks.
You would of course have to be ready to deal with the possible 50% roosters. Not sure if you would be willing to process/eat them,, or willing to let others have for their dinner table.
