Its your choice, sorry to not be much help, I have never let a broody hen set on eggs
At 17 weeks you aren't going to be able to tell Quality completely, But he is looking pretty good!
I would contact a breeder and see if they are able to send you some eggs. I will probably have some in spring, But it seems that you need one sooner!
I may do that I'm worried about him and really don't wanna lose him