For that lift it would be highly recommended to get at least the retainer and lock set from moparmagnum.com or Hughes.
I replaced the springs with a Hughes 310lb open set which I really didn't have to but I felt a lot better about it. (200 bucks or so for the springs and retainers, locks)
The retainers are designed to allow more spring bind and lift clearances because the stock EQ's and valves are only really safe to run just a bit over the stock cams without the extra clearance the retainers give (they sit a bit higher on the valve stem)
My cam is pretty much exactly the same lift as yours, and the retainers and locks were a must to make sure the retainers didn't run into the stem seals, and the springs highly recommended.
Keep in mind the springs have to pull those valves closed at higher RPM's and think about what happens if they don't.
