Congrats Levis Lover for your new FIAT.
Looks beautiful in white. IMHO don't remove the headrests, they are more for safety than comfort. It's a bit early to ask but 'kitna deti hai?'
For the problem of rear view may be you can look at rear camera.
I also use two types of mats, one carpet type and other on the top of it are transparent(black).
And yes Enjoy your ride.