Names for my rats and...?

ok instead of a hairless rat im getting a medium rat and a large rat. the medium one is gray and the large one is all white. i am still a little unsure about the names but so far i have two names. the white one calypso and the gray one silvermist. but i want a few still to choose from. please give me some cool names or greek goddess names besides athena and aphrodite. and also.... i have a cage from a guinea pig awhile ago and i dont know if he spacing between the wires is big enough to escape. and last,,, do any of u know which kind of rat is better? like male or female?? thankss!! please let me know soon, im going to get them at 11:00 tommorrow morning nov. 2nd ]]