The only things CHR is good for are offensive spells. Elegy, Requiem, Lullaby. Looking at your level, the only thing you're likely using at that level is Requiem, which is relatively useless at that level.
I suggest just going full-on MP with /WHM and being a backup healer, or /NIN and EVA/Haste gear to pull. At least until 40, at which point you get Chanter's Staff, the only staff that improves buff songs. Remember, Singing/Wind/String skills are the only things that improve your buff songs, and as such are the most important things to look for pre-endgame.