I can't speak to your height questions since I am 6' 1".
What is the average miles you can put on it in a 8 hour day..I guess what I am asking is 500 miles a day pretty easily achieved ?
I have my C14 setup for mainly long distance rides like Iron Butts, Short weekend ride to eats for our group are a minimum of 500 - 700 miles in a day. I have done several 1500 mile rides with in 24 hour time frames with it. The bike can handle anything you throw at it. The only limiting factor will be the seat you choose.
Can you get the bars far enough back to get in upright seating position ?..
I have Helibar Horizons. They are new and a bit expensive but they will pull you back several inches and at 6' 1" I sit straight up.
I am looking for a daily commuter ,a more sporty & Hp bike,But I also ride solo a good bit & take some 500 mile rides one way,on a whimm..So I would like to be able to say I am out of here hit the road a do 500 miles & not feel wore out..for my self & save the wing for longer & 2 up riding..
Like I said, short rides, long rides, the bike is so versatile you can ride as much as you want but be warned... your going to have sooo much fun riding it you may not use the Wing much anymore.