Well. your original idea of getting a separate set of quality lights, and installing them separate of the existing battery is probably the best idea, stupid can-bus systems.
The hella black magic kit does look cosmetically nice, and would look pretty awesome on the black compass.
Yes, its a single post mount, as are most larger lights, and yeah, removing the facia and drilling would be a PITA, but you really dont want to use self tapping screws to mount lights that big.
If your dealer has a rallye on the lot, you may want to go see how the lights mount to it. Maybe gramps has a picture of it. I suspect that theres some type of bracket that attatches to an existing sturdy mounting point, and extends thru the bumper to hold the lights.
I remember, a long time ago, buying a set of brackets from a parts store, that clipped, using tension screws, to the c-channel type bumper, and went thru the bumper, and terminated in a raised single hole, for mounting a stud mount light to a plastic bumper... but its been years since, and I dont remember where we got them.
I totally agree with using the black magic's though, they'd look really great on a black compass.
Gramps, in case you havent seen them, here are the lights we're talking about
It uses an internal set of black baffles against the reflector to have a blackout look when switched off.