Ok, here is my thinking. First of all, I would like to do a 4 point spend. That leaves us with one HW to use when it seems like a good idea, and one to keep in the bank until a truly desperate situation calls for it to be deployed. Unfortunately getting to exactly a 4 point spend probably requires strategic voting, but I'm too lazy to do that math so I'll just pick out how I'd like to spend four points.
[X] you can manifest a body for your Stand (2HW) (sub-options are exclusive)
-[X] make it a close range stand (1HW)
Manifesting a body is a big step. I like close range because Shizuka is a hot blooded youth who will be charging face first into battle. A long range stand is going to be less useful for her and less suited to her personality.
[X] grant it an offensive ability (1HW)
[X] grant it a defending ability (1HW)
[X] make its powers obvious (-1HW)
Again, hot blooded youth. She's already telling Homura how stands work, it seems highly unlikely she's going to keep her own stand's abilities a secret. Might as well get a point out of it. Offensive and defensive gives us a nice balance. Killing is crazy. Survival is meh, I could be talked into it over defensive but why complicate things.