I have the 223 UV and I will tell you that after a while, weight WILL be a factor. They are heavy. The combo of laminated stock and 24" heavy barrel add up.
My suggestion is to go middle of the road and get the 243 Ultra Hunter. Laminated but normal barrel weight. Still not a light weight but lighter than bull barrel.
If it is truly to be a truck gun, consider the synthetic stock. More durable, lighter, and less prone to temperature issues.