My cats didn't wake me up when they had each other - I had one who passed away from kidney disease. When the surviving cat was alone, he did cry a lot at night and tap me on the face to wake me up! Now we have two cats again, he is much happier and no longer bothers me, as long as they are allowed on my bed to sleep with me.
Two cats really isn't that much more expensive than one, and it is worth thinking about for the companionship issues. You want to make sure the cats the breeder is breeding from check for genetic disorders with heart and kidney. I think the problem was some kitten-farm type places thought they could make money from "rare" minks, reds, chocs and lilacs. The standard seals and blues are probably a safer bet.
Ragdolls are absolutely gorgeous, very floppy and friendly, and I love mine. They are a part of the family, and I wouldn't be without them.
You should consider that the cat may well wake you early or in the night, especially when it is a kitten. They will scratch your furniture and walk on your kitchen counters. I know Cozie and some others have had success training their cats not to, but I know mine don't do it when Im watching and the second my back is turned they are dancing on them. It doesn't bother me particularly, but if scratched sofas (despite the cat trees and outdoor safe space run), walked-on counters and the occasional night time yowling bothers you, you should reconsider!
www.ragdollcatguide.com/forum/index.php is a good site is you have ragdoll-specific questions!