| Hi,
I have the mont blanc system 3000 on m y roof, i use thule bike racks that i 'borrowed' from my dad. these are the older design, no the newer streamline ones. they fit fine i've had no problems, had two bikes on a few weeks back.
The difficult bit is the mont blanc roof bars once you have those sorted any bike rack should fit, i'd definately use a roof nmounted one since you already have the mont blanc bit, the bonus is you can get locks to secure your bike to the roof, with a rear one this isn't so easy.
as far as putting it up there, if you have a light enough bike its not too difficult, i hold the down tube and the front forks and lift it above my head bringing the wheels down to sit in the grooves on the rack. usually have a second set of hands to strap it on whil i hold it steady.
hoep its helpful
jamesw24 | 
