Looking at the mods you have completed, it looks like you have not done anything to your AIR Intake. That being said, I am not sure what the Fuel Controller is really gonna do for you at this point. It wont hurt though.
I recently bought the L&M Lowering spring for my bike. I have not noticed a huge difference in the ride itself, but the bike looks alot better when it is parked. It looks 1000% better when I sit on it.
I was going back and forth choosing between the Platinum Air ride and the Lowering Spring. I went with the spring to save some money. I think was a great bang for the buck at $200 or so. I do not remember the exact amount.
If you plan to do something to your AIR intake, then I would go with the Fuel Controller so you will be ready when that time comes. I do not think it will hurt anything, I am just not sure how much it will help right now, but at least you will be well positioned when you pull that trigger.
I don' think you will go wrong either way.
I am not sure if the FI2002 is the auto pro version. If so, another option would be to get the manual version AND do something to your AIR Intake and probably come out about the same cost wise.
I am sure there may be mixed opinions about that, but it would get both the Fuel Controller and the AIR Intake taken care of at the same time.