That looks awesome! I wish that was the look they went with for Halo CEA. That's how my spartan looks in Reach minus the ammo belt. Though you made the Mark V shoulder pads look way better that they do in game and you fixed the Helmet as well
The only thing I don't like in the reach model is the bulkiness of the shoulder pads. But I like how you fixed them in your picture. On the waypoint forums I suggested several times to use a tweaked Reach model.