Sweeeet my description wasn't that crap Yeah you're spot on about the brackets Yes I imagine that there would be a way of combining brackets and focus splash guards but as I haven't done it you'd be on your own trying to fit them.
Yep I just drilled through the plastic lining. The mudflaps already had holes so I held it up to get the height right, marked it and drilled. Be aware though, if you're planning on lowering fit them after the springs as they will be too low otherwise. I had to readjust mine