I am actually an electrician, so the wire pulling part is not a problem. There are several brands of pulling compound, yellow 77, polywater etc.
One very helpful trick when pulling cable is in making the "head". This is how you attach the pulling string to the wires. Using a half hitch knot and staggering the end of the wires you're pulling is key. I think I will just post some picks when I get to this point.
My main concern was in the actual drilling of the bars. I was told it would compromise the integrity of the bars and they may fail. Reality being that, anything can fail. Needless to say I will be drilling some holes.