I like females better....I just dont like the males dragging their junk all over me, lol. I've had both though and they are great pets!
I hear that cedar is not good for respiratory systems, so we use pine shavings or horse bedding pellets or that newpaper stuff.
They will need lots of toys and things to climb on..they are smart and get bored easily. I change out toys every week.
I use a big bird cage as well, so you should be fine there. They do dig in shavings so the plexi-glass is a great idea, or we just used some of that baseboard stuff that we had left over from a bathroom remodel. Also make sure the feed and water holes are SECURE! They can push them out and escape. They are very crafty! Dont forget they need something to chew on like your other pets did.
You have to watch protein and fat content when feeding them. Im sure you can Google all that you need to know.
Get a pellet specifically for rats, and you can use gerbil/hamster food as treats. Give dog food if you want, but not cat food.
Best of luck and post pics soon!!