I can appreciate this is a budget project. Mono-white is a slippery slope out of the core 3 packages, (Ramp, Draw, and Spot Removal). It’s only fair at Spot Removal.
Ramp and Draw is about 95% on colorless support in Mono-White.
If you’re budget can’t allow the Mono-White Defensive, Tutoring, and Recursion value engines, which is its powerhouse of strenght, then you need to run with it’s other strenght that only red can match.
Mass Removal/Wrath.
Especially with a commander like Avacyn.
🙂