I think, from what I've heard, that the cell and gravity may be too similar for my taste. I'd probably look at one or the other (I'd plump for the cell) and set it up for an early rolling arc-type reaction, then I'd go with something like a Complete NV or a special agent for a more angular look. I also think the tropical is too limited, and would rather go for something a little meatier, maybe a Jolt solid as suggested with a mild drilling to give you a little more versatility.
--------------------
Reporting from England