Magnum 5.9 cam swap details

Long story short I have to get a 5.9 together in a hurry. I have the hughes drop in valve spring kit and a reground cam. I kind of figure I will need pushrods. Will I need to cut down the tops of the valve guides?
Am I forgetting something.
This will be a weekend refresh,bearings,timing set,gaskets etc because it has to be running next week, so going to the machine shop is not an option.

Cam specs are below.
#1429



210/214 @ .050”, 260/264 adv, .506”/.506” lift, 111 sep., 900/5200