Ratties two new rats!

Ok, so after a few months of thinking about them and doing LOTS of research, I finally decided to get 2 baby rats! I found them advertised on Craigslist as feeders (free to a good home) so I went and get 2 females (we named them Pip and Pixie). They are 5 weeks old and still a little shy but warming up pretty quickly. I found a HUGE 4 level ferret cage down the street at the curb for the garbage men to get (it's in GREAT condition, just needed a good scrub down). At first, the girls didn't know what to do with all the space. I added hammocks, braided fleece ladders, a dig box full of dirt, a litter box with carefresh, a tunnel, etc. (don't worry, the cage is enormous) and now they are having a lot of fun. I ordered Harlan Teklan (sp?) block for them and give them fresh veggies and other healthy treats. If anyone has any advice, feel free to post. I will get pictures of them soon, I promise.