As dan says if you want to "4wd it" later on then you will find the transfer box and the steering rack occupying the same space, which if my grasp of the laws of physics serves me correct kind of is a problem.
So if you are going to "4wd it" (I love how easy that is to say, kind of like "polish it" or something else you do one afternoon) then you are utterly wasting your time making it all fit 2wd first of all as the uprights have steering locations that wont suit the new rack position etc, which means you'll then be wanting new driveshafts again to suit whatever donor uprights you choose etc, and even if you are going to pikey it about by cutting and shutting a clio shaft and a VW shaft thats a lot of hassle.
Then things like the custom flywheel to fit the VW clutch and 172 engine, im intrigued how you intend to do that without spending any money?
I'm of the opinion you have NO concept of what is actually involved in what you are doing and that in a year it still wont be done, but good luck anyway