I play with a desktop and Thinkpad travel keyboard on my lap, in the living room. This means both of my hands rest in a fixed position, with my left middle finger on the 'E' key, and my right one on the pointing stick, while the other fingers can stretch to other keys. A lot of other keys. I could not imagine using a trackpad and, since I like having the keyboard or laptop on my lap, an external mouse would be out too. The one and only laptop I would consider is a Thinkpad X1 Extreme, a thin and light 15" business (but arguably hybrid) machine. I have not actually bought one yet. The specs would be:
i7-8750H (hex core, 4.1GHz turbo)
16GB RAM
GTX 1050 Ti (MaxQ)
FHD IPS matte screen