+Def -Spd Exalted Chrom build?

Those are still good IV's.
Chrom can be either +spd or -spd and still do will and he has really good def.

For a cheap build give him the basic Fury, vantage/chill def, horse emblem buffs, and a +atk/def seal or QR.

if you have the resources you can give him Close def or Steady breath,Vantage,any C skill, QR seal.(to mkae him into a Melee tank)