I ate half of a 10-week TJ roo today. Bbq'd up perfectly. The fact that they're small was a bonus, IMO. I find that farm-raised chickens are more filling.
I processed three TJ-leghorn roosters two days ago (they were already starting to wear out their welcome), let them age as whole chickens, then quartered today. I freeze a breast/wing + leg/thigh in each baggie for the freezer. Saved the neck/back for the bbq as well, because the pickins from those keep the dogs very happy! BTW, always age the whole chicken, then quarter/piece after aging.
I don't know if I'd wait another 10 weeks for the leghorns, chick4chix. That's a lot of feed, and I don't know how much more weight they put on. I'd rather give the true dual-purpose birds the chance to fill out a lot more. I'll think of these more like a small little fryer. I'd sure like to hear a report, though, if you do try it.
Seriously delicious dinner. I like to give them a touch of seasoning on the grill. Chef Merido makes both a Carne Asada and a Pollo spice mix. They're both great for a little sprinkle as you cook. I also like a little mesquite for the smoky taste. The Carne Asada is supposed to be for beef, and it has more paprika. The pieces look a little orangish like a Carne Asada is supposed to. The Pollo seasoning has more lemon and is more yellowish, like Pollo Loco (only one heck of a lot more tasty).
Richard in Neenach, California