Sells don't go 2-5 and 6-11, those are advanced moves. Sells are below those, and they are leveled 1,3,5,7,and 9. When you commune you get to select a number of spells whos total level doesn't exceed your character level plus one. And chosen one says pick one spell not pick any spell. What that says to me is that you pick one spell that you really like and can treat it as the next lower level for counting it against your allotment of spell levels. So pick a first level spell and now it's a first level spell for you, or pick a fifth level one and now it's a third level spell for you. It doesn't give any kind of a limit on which level spells you can pick, so I guess if you really wanted to you could pick a ninth level spell and have it count as seventh level, but you wouldn't get any use out of it for a while.