Yes, to all of the above. You should in theory be able to connect those lights right to the PSX24W (2011 and newer JK's) connectors on the factory harness with an adapter (TRS sells a PSX24W to 9006 adapter that you could hack off if the 9006 doesn't work with your lights and just hardwire to them. I have seen some of those LED lights do a funky back and forth flicker as they bleed down, if that happens, you can do a relay and parallel the 12vdc from the harness to the coil and the line side of the relay and that will eliminate the need for any additional wiring past the bumper.
Some folks are fine with being screwed over, perhaps finding confrontation to be more stressful than just living with whatever the problem is. These are excellent consumers, manufactured to the finest specifications.
Reformed Jeep addict... Jeepless for now.