Help with my first engine build (5.9 Magnum)

Application:
1967 Barracuda Coupe
4 speed manual

Starting Point:
Stock 360 Magnum (141k miles)

Plan:
-Dingle Hone Cylinders
-Re-ring Kit (Federal Mogul 205-6378-000)
-Professional Products 4 bbl aluminum intake
-Carb 4bbl (I haven't decided yet)
-Cam Upgrade (COMP Cams 20-746-9) Advertised Duration 265/273, Lift .506/.506
-Upgrade Valve Springs (Mopar Performance P5249464 - 1.418 in. Outside Diameter, 1.640 in. Installed Height)
-Headers (I haven't decided yet)

Questions:
1) With this sort of cam application, do I need to upgrade my valve keepers?

2) Would a fresh set of stock roller lifter hold up, or would they need to be upgraded as well?

3) Any other miscellaneous advice would be warmly welcomed. This is my first motor build of any sort, so I am learning as I go. Thank you!

* I am aware with this sort of swap, there are some small things to look out for: Rear sump oil pan, rear sump oil pump, timing cover swap for mechanical fuel pump, engine mounts won't line up perfectly.

Again, thanks for all your comments!