It looks like a good start, just a few things:
The brick textures on the walls seem out of scale. If those bricks are Lego pieces they would be the tiniest possible ones compared to the rest, covering only one nob and having the smallest height.
It seems unlikely to build such a large wall out of those tiny pieces and if you would build a wall with them it wouldn't have the pattern where each block is shifted in the line above the old line because you need at least 2x2 blocks to do that.
In the editor shot the smaller house, the roof seems to have unnecessary brushes on the flat side. but I can't really tell from the shot.
It's all a bit empty. You just started but you said you want to release it soon. I'd look for some stuff you could place in it.
Ok, alot of that stuff seems hard to do with brushes, I don't know if there are any mapobjects planned for the mod, but maybe you can find something that works with brushes.