Please don't start rumors that you don't have all the facts for.
I will let you reflect at length on what you have just written. Mod or no mod, take a deep breath, dude.
It depends on what you want to achieve - whether it's realism or function within a useable layout that you want the most. The size of the windows and doors might be what it all comes down to. I'm doing a similar project and found trial and error with real bricks to be as helpful as LDD when it comes to significant design issues. I also always find LEGO seems bigger in reality than in photos or computer sketch ups.