That's a good looking engine, The combo sounds solid. But i've read that the foam in those air cleaners tends to collapse as more air gets pulled through them at high rpm, and restricts flow.
I ran V-stacks on mine, the problem with those cleaners is the foam can/will catch fire if a flame hits it, another issue is the foam starts falling apart & going down the engine. I'd install some household metal screen in-between the 2 rings, i'm sure they have a mesh type pattern like a grill so it'll hold the screen in place. For street driving, i'd run 2 round cleaners with K&N type filters.