Just piping in, I also use fleece liners for my rats (my last batch was 3 boys) with paper pellets in the litter boxes. I cleaned out everything every 3 days. I did try all paper litter before but it ended up being more work than the fleece, which can be shaken off, laundered, and reused.
Mine were all hand raised by rat fanciers so I didn't have any real problem socializing them to me. I did carry them around in my clothing for a while to acclimate them to my scent (and after that they just enjoyed riding around in it - even when they "ran away" into my bedroom I'd find them sitting on my night clothing), so maybe you could try putting some scraps of fabric with your scent so they'll get used to it, even when you're not around. Best of luck with the boys!