First off, that's a very good video! Most we see are crappy and have horrible sound.
Hmmm, kinda a tough call but to me, it sounds really noisey. We have a Comp roller with their 286 cam and it's pretty quiet compared to yours. Since you have a very loud exhaust and it still comes across as valve noise, i'd be suspect on it. Hopefully some of the others will give their opinion.
What rockers do you have on the heads?