Bulding router fence to fit back of t-slot TS fence

I have a mule accusquare table saw fence system.
I am looking to build a router fence to mount to the back side similar to the one made by Mule http://www.mulecab.com/accessories.asp?mnu_Products=3&Access_ID=6
My plan was to get some two inch thick stock mount it to the fence with some t-slot bolts. On the "outside" of the 2 inch stock I was going to mount a t-track to allow the attachment of a split fence.
Does anyone see any issues with this? My biggest concern is that there is no way to remove or adjust the fences without using a socket set. I would need a socket set since the bolts would have to be counter sunk.
Does anyone have a better way set up a router fence on a t-slot TS fence?
Also what material should I use for this? Unless someone tells me otherwise I was planing on using mdf
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