Awesome. I just had to turn up the color contrast a little bit on your graphics in photoshop so they blended better with the aoe2 buildings and environment (their artstyle seems higher contrast with the colors). And I had to make the cathedral more 'compact' so it fits nicely onto the tile layout of the aoe2 monastery.
Here is another mod where I changed the dark age architecture with some of your palisades and thatched roof assets: https://www.ageofempires.com/mods/details/48645/