There is a firm that already makes a billet alloy Power steering idler. Anembo engineering.
Ebay There is a firm in the USA that makes one in steel. I made one up the same. Nice and easy.
Only thing is they all use the chunky alloy “C” casting.
Some thing billet that bolts to the block would be nice.
you don’t need to add an extra idler for the Ac delete. Ford already supply a belt for the poverty spec focus with no Ac.