Thanks for the tips! And I am going to do tiling textures using Quixel, this way I can export them to UE4 and create a Master Material then mask parts using the Material ID. I just hope this works out.
If you re having issues with your rough masks not responding quite how you expect make sure you have srgb disabled on those textures. If you disable it set your sample type to linear color on the texture sample node (these will be set automatically if you drop in the texture to the node graph, but if you change the texture…