If Blake made it known that he required help with travel then Xavier would sort everything for him, so yes, a car could be provided. I'd say go with Mutant Chauffeur #7, but feel free to have Blake spot proper X-Men once he arrives on campus, if you're so inclined.
Thought it sounded familiar, haha. Most likely, it won't be entirely Bone Manipulation, as I'm thinking the Bone Swords would be the extent his mutation goes to; he'll just work on using them to fight, rather than just for show as he does now.
Also, how long will you give for SU's to be finished?
Hi there! Just wanted to make you aware of http://en.wikipedia.org/wiki/Marrow_(comics) in case you weren't already. I have no issue with the bone blades/armour power route whatsoever, just wanted to bring this to your attention due to the name and power similarity.