Short hauls and idle time on a farm. Opinions?

[NBFarms]

New here, and as my name states, we are on a farm and have short hauls and sometimes long waits in line and other situations that require idling. We currently have a ‘97 Pete 385 (Cummins M11) that has been fairly good to us- great compared to the stories I hear on newer trucks! The thought has been entertained to spruce up this truck and see how long it would go but we also like the look of newer trucks and my father would like an auto (I don’t, but such is life). Just looking for stories and opinions from people in similar scenarios. Thank you!