I have '08 3.0si with Premium/Tech/Heated front seats.

I thought rear climate, coldweather package, running boards are not worthwhile considering $$$, but now I regret not ordering them.

I'm going to keep the car for 6-7 years until the next model change. I am very glad I have at least premium and tech.

If your uncle is someone who is keeping the car for long time (sounds like he does), ask him to get as many options as he likes.