Just carry a little bitty short foot stool (can even be a folding one). I do this myself and have put full susp mtb bikes on the roof of a much taller Isuzu Trooper. As you know I only tower over you by one and a half inches.
A roof rack with a fork mount means you are lifting the weight of the bike minus one wheel. If you buy a rack that takes the entire bike, ask around and do your research (I know you will
) because I've seen some major remodeling of cars and bikes from such racks failing.
Or get a hitch and a hitchmount where the bike sits on its wheels (or wheel and fork) also. I personally dislike racks that hang the bike from the top tube for many reasons, one of which being it trashes the bike paint.
PS - Sports Rack (or whatever it is called) on Arden Way has a large selection of rack stuff and frequently has 10% off (look on there website). Then there is always REI close to you.
Frends know gud humors when dey is hear it. ~ Da Crockydiles of ZZE.