So I want to get the Arms Reach co sleeper. I was just about to purchase it online when I looked at the dimensions and it says that if you have a pillowtop mattress then you have to purchase the leg extensions for it as well. This is fine, BUT I'm just wondering how stable and safe it is with the extensions attached. Has anyone used the Sleigh co sleeper with the leg extensions attached and how did it work for you? Thanks!