Welcome to DC, Kenny.
You don't really gain much by just cooking the noodles. I'd assemble and cook the lasagna then just reheat it for Friday. No need to freeze it for the two days remaining.
Further, par cooking a dish like lasagna means the interior never reaches a high enough temperature to deal with any lurking nasty bacteria. So you just create a warn cozy breeding ground for them. Cook it all the way or don't cook it at all until Friday.
"If you want to make an apple pie from scratch, you must first create the universe." -Carl Sagan