You may need a step-ladder to run the hedge-trimmers over the top. I’m a bit over 6’ myself and have to reach up quite a bit to run them maybe a foot over the 5.5-6’ trellis. But, Having the trellis a few inches higher is very good in one way- the height I have it is just high enough that I don’t see it over the bill of my hat. My first notice of it is when it hits my forehead…
34 vines will be a lot to keep on top of. It’s easy to look at it and say “ugh, not today”. But then it keeps getting more and more difficult. I think if you get on a regular schedule it might not be too bad.
Honey Jar is a great choice. Autumn beauty is larger and one of the earlier ripening one, so it isn’t bad. I’m not as fond of it myself, but some people seem to really like it. Sugar Cane is probably the earliest here, maybe a tad before Autumn Beauty, though not by much. It is also crisp, with great texture.