As turbo says, a dual 2v would be a better choice with the bore size (and standard injectors) those 4v TBs have, if your manifold will flow properly using 4 of 8 bores. That's another work-around. If I were doing this one as a custom setup, I'd use them as-is and simply kill the 'secondary' injectors and fix the plates closed. With 4v, even with progressive linkage, you'll get to about 1/2 throttle and any more pedal will make no difference. The up-sides to using them as 2v are better throttle opening control, better fueling across the range with half the injectors (better fuel control), and yet the ability to simply re-enable the 'secondaries' for more growth later as desired. All win-win. While this is a simple change for a custom EFI controller, I don't know if the EZ unit is that easily configurable.
David