^ Haha, I just absorb information and try to think about how I can apply it to my car

Some places that quickly develop rust (but don't matter that much) are the calipers, underbody bolts, engine fasteners (particularly the low-pressure AC tube bracket)... while it's not a bad thing that they get rust on them, it still looks bad. And sacrificial anodes seem to me like an easy way to eliminate that rust.
And yes, the Si is official... the dealer got me the VIN last weekend. If everything goes according to plan, I should have it on Saturday. The good news is that the EX is staying in the family; my sister is buying it from me. So there will definitely be a photo shoot