Looks like a nice kit overall. The most common layout of Rogers drums was probably a 20 bass with 12 and 16 toms. That combination had wide application in rock and rhythm and blues bands and it seems the intent was to provide distinct tonal variety while maintaining a relatively small three-piece set-up. The larger sizes in that day were probably more common to big band music, though as the 60's moved on and into the 70's, the larger kit became more prominent in rock, with the less frequently seen 20,12,14 or even 18,12,14 appearing here and there. I've been using the larger kit on outdoor gigs this year. With respect to the bass drum in particular, the effort needed to get a good low end thump was lower with that size drum than during the prior year when I used the 20,12,14 configuration.
I've more often that not tried to use the 20,12,14 configuration because it reduces the hauling effort, and when at home, it fits more easily in my car. Overall, I don't expect you to be disappointed with that 22,13,16 layout in any way.
Good luck closing the purchase, and give us an update once you have put it to use.
By the way, that COB Dynasonic was used by Bobby Colomby in a lot of live play that you can see on YouTube, even after he began to use Premier drums. He eventually swapped to a Premier steel snare, and that may have been the result of commercial pressure since he was endorsing the Premier products. In any event, when adjusted properly, it is a great sounding snare and a workhorse of the first order.