I haven't run a Victor, the only intakes I've run with the clear valve covers are the Performer RPM and 351C Performer RPM on my intake adapter. But in both cases, with .070" restrictors in the heads and a high volume pump in my 428CJ, I've never seen the oil level come up to clear part of the covers; the factory drainbacks seem able to handle it with no problem. So I don't think the Victor would pose a problem for you.
With the cam in that engine I limit the dyno pulls to 5500 RPM. Today I am in the midst of my cam change, to a 294S, and hope to run some dyno pulls tomorrow up to 6500 with this cam. If I get that far I'll see if I can put my camera on the clear valve cover and record a video of the oil level during a dyno pull for you. That will be interesting...