Higher bar could be handy too, as the lower ones can be a little close to the knees when turning full lock, depending on your height. Funnily enough, I straightened a pair for a customer yesterday that had approx the same dimensions as yours.
My old 28 short frame , sold a few years back (sheds tear slightly) had really wide bars on it, that cleared the knees easily. Shame I never took dimensions off it.
As for matching one bar to the other, yes , thats what I did yesterday too. If both bars are a mess, I go with the dimensions in the R&O, if one side looks pretty good, I just match the bent side to that, less manipulation of old tubing the better, in my humble opinion.
cheers,
Tim
ps hope you are recording all this stuff as you go along, Mike. Maybe as time goes by we can start collating some of this info into one place as an addendum to the R&O. A list of areas where you have run into a shortage of info would be great.