A 15 lb rooster will not be tasty
Good job coming to a decision. This will buy you more time to decide which if any of the roos you have you want to keep.
Other ideas on getting rid of extra roos.
Place a free ad in the newspaper.
A sign on the post board of your local farmers co-op
Craigslist and here of course.
Are there any local auctions in yours or neighboring towns?
Hope one of those help if you come to the decision that 3 roos is too many for 6 hens.

Other ideas on getting rid of extra roos.
Place a free ad in the newspaper.
A sign on the post board of your local farmers co-op
Craigslist and here of course.
Are there any local auctions in yours or neighboring towns?
Hope one of those help if you come to the decision that 3 roos is too many for 6 hens.