House Model - Modular and UV Help

Fury

Hey guys, this is my first post on Polycount and i'm new to game design i thought i'd get help on this house model i made. Im trying to make it modular so i can use parts of it to make different houses and also need help with deciding which parts to use tileable textures and which parts not, also not sure i have stacked where necessary.

Here is the model-

i know the UVs aren't laid out properly yet also i need to add planes in the windows and add a door

here are the stacked UVs-




and all the UVS-


thanks ^-^