The battle engine is a 50pt game thing for Menoth. They need enough support at 35. It would just dilute things.
I noticed I recommended Vilmon when you already have him listed. I would instead consider doing the following:
Drop the Flameguard UA and take Rhupert instead. He does more for the unit than the UA does.
With the points from the 2 superfluous Paladins, I would take a Vassal of Menoth and Covenant of Menoth. They're always so gooooood.