I would go with a cooltube with reflector. You don't have a lot of space, so it'll get hot. You also don't have a lot of height, so a slim cooltube as opposed to a hood will let you raise it a bit higher than usual.
I would recommend a High Yield Super Nova http://www.htgsupply.com/Product-SuperNova-Reflector.asp . It's the one I use, excellent light coverage due to the sloped front and it's air cooled with one of the flanges on top which makes it easier to fit in a small space.