Is this LA360 XE268 cam kit deal good for my combo?

The crank sprocket is 4 degrees which is 8 degrees at the camshaft even thou the box says 4 degrees retard or advance.

Well...... almost.
But you have the right idea.

The crank turns twice as fast as the cam.
The three-way sets advance/retard the “cam” 4 degrees(camshaft degrees)...... which shows up as 8 degrees on the degree wheel.

Those 3 way sets are pretty useless for trying to dial in a cam IMO....... as you discovered.