Wow! Really liked this guide! Will thumbs it up when it will let me! Great work :D Also I definitely agree with Gordramus on the utility vs damage/ap thingy you were talking about. Didn't totally understand it all but I see where utility comes in handy over top of an ap damage.

See I see where you are going with that. Ap is a really nice thing to have on Lulu which is why I leave you a space open on the build to build what you feel you need for that game. Solari isnt a must. A friend of mine disagreed with me building randuins so I decided to go with solari because it goes with your shield. Remember that these are just suggestions. As for will of the ancients I have gotten it a few time and it goes well as my 5th, and last items. In ranked play you are more valued for your utility then you are for ability to damage and things of the such. With my archangels I tend to be fine. If you feel you are becoming focused get a more defensive item there. My regular fifth is Aegis of the legion which gives me and everyone MR although its not heavily needed. If you play Lulu properly then you should be able to get out of most except getting ganked by extremely heavy cc teams or just being jumped by more than two players. I understand you have experience with Soraka but she is a majorly different champion and her mechanics are much different. Spell vamp is not required and is only used if a team member benefits from it and doesnt want to buy it. Thanks for the comment though! :D

A number of things wrong with this.

First off, where the hell is your MR?
Second, where's your will of the ancients?
Third, Why on earth the locket of iron solari? Aegis is a far better pick as it gives you resistance.
Also, like soraka, Lulu is best suited to building AP and CDR to support her team, she can shield them from more dmg, give them more health and dish out a lot more dmg.
somewhere between 200 to 400ap with 1 or 2 support items.

If you are in a ranked game with her you are constantly buffing and harassing the bottom lane. I usually get full stacked archangles by the 45 minute mark on Lulu. The added AP is a must and it gives you mana which fixes your mana problem. So for the price+mana regen+ ap given it is the most viable of the items.

why da hell "Tear of the Goddess" and "Archangel's Staff". you need a two hours game to get full stack and you don't have other mana items? there are other cheaper alternatives!