Im in Alliance and used Just Grillin in Keller for my outdoor kitchen and was very happy with Jeff and his team. I've heard Outdoor Living and Patio (or something like that) out of Denton gets good reviews too but have no experience with them.
Incorporate a Big Green Egg and a spot for it. Get a large sink outside as well. I skipped the sink and I regret it almost every time I grill or smoke anything.