well i remember an old movie.. i think with andy grifith.. where he went to the moon in a privatly built ship to collect an LM lower half.. and he used constant acceleration.. got him there in 1 day i belive... plus a number of books using the concept.. more of a distance thing going from planete to planet than just lazing about in orbit..

i know that iss crew memebers spend over 6months in microgravity with not to many ill effects... just puting out there for comfortsake to put a bit of artifical gravity in there

and i'm a sci fi geek as well... i have days going threw wikipedia just researching ftl, and near future drives just because it interests me