I never clone the system partition. I always install from scratch deleting the partition and formatting at install.
Never took me more than 3-4 hours installing OS, updating, configuring an all the programs that I use, and want.
Why is taking you so long? Grab a beer or two and a cup of coffee and by time you'd drink it you are done an have a fresh OS instlled. Better than clone in my oppinion.
Oh, and I allways block my homepage through registry!