I'll do bullets so its easier on us all to read, for the sake of things.

1. I can always shift down to one turret, no big issue there. Build more as needed.
2. Non-lethal related weakness can play into the whole savior factor, but as for what you said regarding building level impacts, given that's a high end, near maximum output at the given moment for the suit, yeah, shut down and reboot would work well enough.
3. Lack of utility can be rectified during plot, as I noted she ran out of funds, as her father didn't leave her a lot to work with even then. I could also add more to the whole non-lethal weakness, as that could also be added up with "tries to avoid harming innocents as much as possible, hence why weapons are low end stuff." As a character mentality with her is that she's trying to avoid doing damage that's unneeded. Also why the cannon's maximum setting is still kind of low, in a sense. Considering she's sort of iron man, but a poor mechanic trying to get by between odd jobs and whatever being a hero nets in funds' iron man. Iron Man had an entire company at his back, same as Batman, kid's just got what her dad left her and whatever else she finds in junkyards.
4. I assume you mean super strong for the narrative? That's understandable.
5. Living battery can be easy, too much can make her woozy, or force her to sleep, or burn up a lot of calories, and force her to eat. Granted, her own carefulness would also make this an issue that can be overcome, usually.
6. That is true, but Iron Man himself once said he was just a man with a suit. What he didn't say at least at first was that he was also a billionaire. But I can understand the concern. Its all about brain over brawn with this character here, for the most part.
7. All in all, whole concept is just, kid wants to honor her father's memory, but also doesn't want to be in his shadow. If this thread lasts long enough, perhaps I'll go more into detail as to what happened exactly to her father, but that's for another time. Same for whatever adventures he got into as a hero before he retired, and notes on his nemesis.
8. I wouldn't worry too much, as we're all here to have fun(at least that's what me and the friends I suggested check out this thread wanted to do), so if for some reason, something I'm doing against odds causes actual issues, just tell me either privately or in the OOC, and I can adjust as needed.

I can make the minor tweaks before I post the finished version to the character thread, since you said, if I'm reading earlier right, its basically approved.