Joking aside, it's a great choice. Duke's camp has produced some really young UFC-caliber guys, which is a sign it can get a guy ready in limited time. I know Brooks has some casual BJJ experience, and assuming he's in good physical condition and is durable/stays injury-free, he can learn a lot in 8 - 16 months of training.
This whole notion that you have to train for ten years in the "new" UFC is bunk anyway. Fighting is still 90% natural talent, which is why guys like Jon Jones and Pettis can be champs so young, and why some guys can barely train and still be top-10 fighters.