Lulu support, AP carry or AD carry. thoughts?

I recently picked up the new champ Lulu started playing her support bot up until I realized how op an on hit build with her is. She is a support but honestly her passive makes her a very good AD carry I find. Tho her skills scale on AP going beserk greaves, malady, wits end and mandreds then nashors and deathcap for her scaling, End game she is a beast. Tons of damage, good range, support skills and decent CC what more can you ask for in a support? others thoughts and tips on her?