I have a few things on my mind...
The Special Agent is not a heavy oil ball. The Double Agent is a heavy oil ball', but that's because it is a particle ball. The Special is a solid version, so if you dull it, it may match up well for heavy oil, so go for it; maybe 500 abralon. You can also try the Paradigm Passion, but I've seen mixed reviews for it.
You don't need to go entirely to Storm. You have some decent equipment as it is, and no one really cares, unless YOU have found an advantage to doing so.
When I saw your light oil ball in your current arsenal a Blue Vibe, I questioned myself; the Blue Vibe is underrated, and can actually hook quite a bit.
These are just random thoughts I pondered while reading your post. If you feel that there is a benefit to switching to Storm, go right ahead. I'm not stopping you or saying that it's a stupid idea, if that's what you thought.