it must be the cool thing to do on freelancer, asking for dofollow backlinks. I dont get it, dofollow is a myth. IT makes absolutely no difference! Ive been doing SEO for over 4 years, and I never pay attention to the dofollow crap, and still rank fine! As far as your edu links, I create linkwheels on edu/gov sites lol.. I think I can come up with over 50 of them for you ;) Shouldn't be a problem