ive never heard of that, and no to me its not even worth the trouble and if anything the lighter weight on the crank will actually help the breakin especially putting less stress on the bearings. There should be no problems with the jwt flywheel and gspec pullies.
And as far as the cams go im not going to degree them during the first trial runs. From what ive researched the build should do fairly well set at 0,0. After the dyno tuning we might play around with it to see if there is any more to be had out of it then go from there.