Other things to consider that I've done to mine, you may want to do to yours.
I've added a few figures on my playfield. They were originally offered in packs of (2 per pack) at Target but have since been discontinued but can be found on Ebay. I've added Clu on top of the left sling, Sam above the right, Quorra above the Quorra spinner, Zuse back around the right loop and a Gem figure by her lane/pop bumper. Gotta put some DOLLS on your game
(attached are a couple of pics I took of my game shortly after owning it with the figures installed). I have them in place with hot glue, easy to remove and it doesn't damage anything.
Also I'd recommend buying the multi-colored plastic protector set from Curly at Little Shop of Games. Together with his plastic protectors and some colored LED's under the slings...this set rocks and makes the protectors look like they are glowing around the edges.
Another mod I did to mine was that I removed the narrow clear plastic posts under the left and right slingshots and replaced them with yellow star posts on the left and blue star posts on the right. Together with the above sling protectors and LED's it looks awesome.
Last but not least, I went all out and had my chrome redone in Candy Blue powder coat. It looks off the hook now.
Also I noticed you said you wanted the FF speaker kit. Let me tell ya. I went ahead and did what others were recommending by purchasing the Sony powered Sub that sits under my game. Trust me...this is all you need...and it's less expensive. It freakin' rocks the house and on top of that. I don't now about you...but sometimes I like to play a game when the rest of the family is asleep. The beauty of the powered sub is that I can turn it off and hear the factory speakers and not wake the whole house up. Once you put a subwoofer in the cabinet...it's bass all the time.
Enjoy your new pin.
Attached are a few pics of mods I did throughout the process of "blinging" out my Tron. There has been a few mods done since these pics. But you get the idea.....