Maybe an Echols Legend stock and get a barrel from Bartlein or Kreiger and have it chambered in your choice of cartridges!
While the Legend is a great stock - not sure it would be great with your 20" barrel (not that 458Win and others have not done it).
Stay local in TX, get a Bridges pattern McM edge from Hill Country Rifles (if is the fastest handling stock I've had on a 70) have JES do the rebore to 338 and rock on!
Cerakote is great, but being in TX, I'd just keep it oiled/CLP'd well and rock on.
