I don't want to be a downer, but I guess you're skipping quarantine??
And eggs can take a few months. I have a proven girl who has been breeding since November and she's not showing any signs of ovulation. I'm guessing she might not go this season. So your girl may or may not have eggs. But I guess the average is ~ 3- 4months. But it could be longer.
For a cheap incubator, look at the DIY section. There are a lot of good cheap ones in there.
As a future tip, I suggest bringing the males to your house. I've seen breeder females stress to the point of going off feed and not breeding after a move. And moving eggs from your friends house to yours sounds tricky.
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