I'm hoping he meant shocks. I guess replacing the struts and shocks is a matter of opinion. When you install the springs, the struts and I think the shocks gotta come out anyway. To me, it's a great time to replace them. It's not a huge amount of more money.
Exhaust is a very easy change. For myself, I'm more than satisfied with just an axle-back style exhaust. I hardly believe any long tube and complete exhaust system would be money well spent for the application.