McKinney's pretty far for me. But I've installed both a HDHCSD roll bar and a HD roll cage by myself. I thought both were straightforward. Remove both front seats though.
A second person might have helped with the initial placement of the bar in the car, but beyond that it's pretty much a one-person job.
I used a hole saw on the deck and then made my cuts so they finished tangent to the hole edges. Made for a pretty neat cutout.
Good luck.