Vintage Air plumbing: Will this work?

[Alponcho]

I think I may have made an error when I installed the vintage air in my Pontiac Powered 70 Firebird. As shown in the figure I drew, I used a couple Y's to create a bypass from the engine to the out side of the Vintage Air (my engine builder/experienced racer urged me to do this). Now, after I buttoned her all up, it occurred to me that the Y closest to the heater control valve is pointed back towards the engine rather than toward the Vintage Air unit. Will I still get enough flow to the Vintage Air? If not, wondering if I should install a Ball Valve before the other Y to control the flow of the bypass.